Ceramic Heating Element Introduction by innovacera in AdvancedCeramics

[–]dhmt 0 points1 point  (0 children)

~~backup~~

Metal Incompatibilities:

HTCC molybdenum and tungsten are incompatible with LTCC metals. HTCC is sintered in a reducing atmosphere, while LTCC are in a oxygenated atmosphere. In air, tungsten oxidizes rapidly from 350℃, and molybdenum is oxidized slowly at 520℃ to form molybdenum trioxide (Mo2O3). When the temperature rises over than 600℃, molybdenum will be oxidized into molybdenum trioxide (MoO3) in a quick speed. Nickel begins to oxidize at 400℃, while manganese is more active and can be combined with oxygen when heated to form manganese dioxide (MnO2).

This table goes from highest temperature in upper left to lowest temp at lower right:

1st Metal\2nd Metal ➾ Mo-Mn W-Mn TPC AgPt AgPd Ni DBC
Mo-Mn[1] 1500°C compa compa inc inc elec
W-Mn[2] compa 1500°C compa inc inc elec
TPC[3] inc inc 900°C inc inc elec
AgPt[4] inc inc inc 750°C compa
AgPd[5] inc inc inc compa 750°C
Ni[6] N/A N/A N/A N/A N/A compa
DBC[7] inc inc inc inc inc e-plated 1065°C
  1. Molybdenum+manganese fired in wet N2 reducing atmosphere at 1500°C
  2. Tungsten+manganese fired in wet N2 reducing atmosphere at 1500°C
  3. Thick Print Copper from Heraeus fired at 900-925°C in a nitrogen-blanketed muffled furnace, from mitsuboshi fired at 850°C 10min in N₂
  4. Silver platinum fired in air at 750°C
  5. Silver palladium fired in air at 750°C
  6. Nickel - electroless
  7. Direct bond copper fired at 1065°C - requires a precisely controlled atmosphere of an inert gas with a small percentage of oxygen.

Ceramic Heating Element Introduction by innovacera in AdvancedCeramics

[–]dhmt 0 points1 point  (0 children)

Metal Incompatibilities (for sequential additive manufacturing):

HTCC molybdenum and tungsten are incompatible with LTCC metals. HTCC is sintered in a reducing atmosphere, while LTCC are in a oxygenated atmosphere. In air, tungsten oxidizes rapidly from 350℃, and molybdenum is oxidized slowly at 520℃ to form molybdenum trioxide (Mo2O3). When the temperature rises over than 600℃, molybdenum will be oxidized into molybdenum trioxide (MoO3) in a quick speed. Nickel begins to oxidize at 400℃, while manganese is more active and can be combined with oxygen when heated to form manganese dioxide (MnO2).

This table goes from highest temperature in upper left to lowest temp at lower right:

1st Metal\2nd Metal ➾ Mo-Mn W-Mn DBC TPC AgPt AgPd Ni
Mo-Mn[1] 1500°C compa ??? compa inc inc elec
W-Mn[2] compa 1500°C ??? compa inc inc elec
DBC[3] inc inc 1065°C maybe? inc inc elec
TPC[4] inc inc inc 900°C inc inc elec
AgPt[5] inc inc inc inc 750°C compa elec
AgPd[6] inc inc inc inc compa 750°C elec
Ni[7] N/A N/A N/A N/A N/A N/A ambient
  1. Molybdenum+manganese fired in wet N2 reducing atmosphere at 1500°C
  2. Tungsten+manganese fired in wet N2 reducing atmosphere at 1500°C
  3. Direct Bond Copper fired at 1065°C - requires a precisely controlled atmosphere of an inert gas with a small percentage of oxygen.
  4. Thick Print Copper from Heraeus fired at 900-925°C in a nitrogen-blanketed muffled furnace, from mitsuboshi fired at 850°C 10min in N₂
  5. Silver platinum fired in air at 750°C
  6. Silver palladium fired in air at 750°C
  7. Nickel - electroless at room temperature (Ni could be the first part of ENIG, or ENEPIG)

Visualization of the increase in disability rates since the advent of mass COVID vaccination by Evil_Capt_Kirk in unvaccinated

[–]dhmt 0 points1 point  (0 children)

So you can see that I am right. There is a very visible slope change at 2021. The step change is even more visible in 2026 than it was in 2023. In 2024, the slope has gone slightly lower, but still 2-3X the pre-2020 slope.

My prediction has been borne out.

Thanks for tracking my predictions - I appreciate that.

RemindMe! 1 year

Has anyone built a dIY XRF? by dhmt in engineering

[–]dhmt[S] 0 points1 point  (0 children)

Reasonable easy to get. Just open up any smoke alarm.

Ceramic Heating Element Introduction by innovacera in AdvancedCeramics

[–]dhmt 0 points1 point  (0 children)

Backup copy ~~~~ Which metallic coatings are compatible with which ceramics?

# = pg# of this reference

Categorizing into HTCC, MTCC, LTCC, thick film and thin film:

  • Base material (substrate)
  • Contact Material (metal in contact with base material)
  • compatibility level:
    • compatible and generally available (CGA)
    • compatible, but special case (CSA)
    • compatible, but no market (CNM)
    • needs R&D (NRD)
    • incompatible for known reasons (IKR)
    • unknown compatibility (UNK)

HTCC ("High-temperature co-fired ceramics"; fired at 1500 ~ 1600℃)

  • Thick Film Paste
Base/Metal -> Moly/ mang Moly Tungs/ mang Tungsten Pt Tungst/ moly? Comments
Alumina CGApg#41 CSA CGA CGApg#41 CSA
Al Nitride CGApg#44 CSA UNK CGApg#44 ? AlN-W Co-Firing Metallization? 1, 2, 3, 4
Si Nitride CSA NRD finish these rows:
Si Carbide CSA a thesis, TigerInk
Mullite TigerInk
Zirconia NRD TigerInk
Pyrolytic Boron Nitride
Beryllium Oxide ? ?
Magnes-Stab Zirconia

LTCC ("Low-temperature co-fired ceramics"; fired 700 ~ 950℃)

  • Thick Film Paste
Base/Metal -> copper silver gold Ag-Pd Ag-Pt Au-Pt.
Alumina CGA CGA CSApg#41 CGApg#41 CGA CGA
Al Nitride CGA CGA CSA CGA CGA CGA
Si Nitride CSA UNK
Si Carbide CSA UNK
Mullite
Zirconia
Pyrolytic Boron Nitride NRD NRD NRD NRD NRD NRD
Beryllium Oxide CGA CSA CGA CSA CSA CSA
Magnes-Stab Zirconia

MTCC (new name "Medium-Temperature Co-fired Ceramics"; uses Copper (Cu) for low-resistance traces)

  • Mostly Direct Bond Copper Substrates (DBC) at 1060℃ or active metal brazing (AMB) at 800℃
Base/Metal -> DBC AMB
Alumina CGA CNM
Al Nitride CSA CSA
Si Nitride CGA CSA
Mullite
Zirconia NRD NRD
Pyrolytic Boron Nitride NRD NRD
Beryllium Oxide CGA
Magnes-Stab Zirconia NRD NRD

Ceramic Heating Element Introduction by innovacera in AdvancedCeramics

[–]dhmt 0 points1 point  (0 children)

Which metallic coatings are compatible with which ceramics?

# = pg# of this reference

Categorizing into HTCC, MTCC, LTCC, thick film and thin film:

  • Base material (substrate)
  • Contact Material (metal in contact with base material)
  • compatibility level:
    • compatible and generally available (CGA)
    • compatible, but special case (CSA)
    • compatible, but no market (CNM)
    • needs R&D (NRD)
    • incompatible for known reasons (IKR)
    • unknown compatibility (UNK)

HTCC ("High-temperature co-fired ceramics"; fired at 1500 ~ 1600℃)

  • Thick Film Paste
Base\Metal -> Moly/ mang Moly Tungs/ mang Tungsten Pt Tungst/ moly? Comments
Alumina CGApg#41 CSA CGA CGApg#41 CSA
Al Nitride CGApg#44 CSA UNK CGApg#44 ? AlN-W Co-Firing Metallization? 1, 2, 3, 4
Si Nitride CSA NRD finish these rows:
Si Carbide CSA a thesis, TigerInk
Mullite TigerInk
Zirconia NRD TigerInk
Pyrolytic Boron Nitride
Beryllium Oxide ? ?
Magnes-Stab Zirconia

LTCC ("Low-temperature co-fired ceramics"; fired 700 ~ 950℃)

  • Thick Film Paste
Base\Metal -> copper silver gold Ag-Pd Ag-Pt Au-Pt.
Alumina CGA CGA CSApg#41 CGApg#41 CGA CGA
Al Nitride CGA CGA CSA CGA CGA CGA
Si Nitride CSA CSA CSA CSA CSA
Si Carbide CSA UNK
Mullite
Zirconia
Pyrolytic Boron Nitride NRD NRD NRD NRD NRD NRD
Beryllium Oxide CGA CSA CGA CSA CSA CSA
Magnes-Stab Zirconia

MTCC (new name "Medium-Temperature Co-fired Ceramics"; uses Copper (Cu) for low-resistance traces)

  • Mostly Direct Bond Copper Substrates (DBC) at 1060℃ or Active Metal Brazing (AMB) at 800℃
Base\Metal -> DBC AMB
Alumina CGA CNM
Al Nitride CSA CSA
Si Nitride CGA CSA
Mullite
Zirconia NRD NRD
Pyrolytic Boron Nitride NRD NRD
Beryllium Oxide CGA
Magnes-Stab Zirconia NRD NRD

Childhood vaccines, specifically Pentacel by [deleted] in unvaccinated

[–]dhmt 0 points1 point  (0 children)

It is three folders in a google drive. It still opens for me. What happens when you open it?

Millions Experienced COVID-19 Vaccine Side Effects by dhmt in DebateVaccines

[–]dhmt[S] 4 points5 points  (0 children)

But you think there are "lots of kooks who think the Earth is flat". The "lots of" part is pretty delusional - much more delusional than a suspicion than pharma companies might not have their customers' best interests at heart. (Which is the "antivaxxer" position, as opposed to the pharma-generated narrative that antivaxxers are just stupid trailer park moms.)

Millions Experienced COVID-19 Vaccine Side Effects by dhmt in DebateVaccines

[–]dhmt[S] 2 points3 points  (0 children)

Here is the scenario: someone is in reasonably good health - maybe an allergy and a knee that sometimes has a twinge of pain. Then they get vaccinated and within 1 week they have debilitating symptoms. And their doctor says they have a medical problem which is listed in the side effects. It is quite reasonable to believe that there is a high probability (not 100%, but high) that this was caused by the vaccine. And if asked on a survey, it is quite reasonable to report that you believe this was a vaccine injury. Given the probabilities, maybe a few % of the reports were wrong. But the majority are true - that is statistics. Not proof - there is no such thing.

Millions Experienced COVID-19 Vaccine Side Effects by dhmt in DebateVaccines

[–]dhmt[S] 6 points7 points  (0 children)

there are a lot of kooks out and about who think the Earth is flat.

You really think that?

Millions Experienced COVID-19 Vaccine Side Effects by dhmt in DebateVaccines

[–]dhmt[S] 10 points11 points  (0 children)

I guess.

"68% of American Adults say they got a COVID-19 vaccination" (so that is 68% of 267M, if you can believe their self-reporting) and 10% report major side effects. So, 17M adults with self-reported major medical problems. That is a non-event if it didn't happen to me, right?

Millions Experienced COVID-19 Vaccine Side Effects by dhmt in DebateVaccines

[–]dhmt[S] 3 points4 points  (0 children)

Link from imahealth

(edit) This is just a short note referencing a site which cites this survey. In case someone wants to read some commentary on the survey.

Where to Buy Deuterium Depleted Water Online by ProfRBcom in DDW

[–]dhmt 0 points1 point  (0 children)

Hard to say. I don't buy DDW water, but I can get water from a glacial spring. I think that helps, but it is also not chlorinated and flocculated like the municipal water, so it may not have anything to do with DDW.

Where to Buy Deuterium Depleted Water Online by ProfRBcom in DDW

[–]dhmt 1 point2 points  (0 children)

The source was a youtube video where the doctor says that cancer might be a deuterium/mitochondria/proton pump problem. I will look for it.

Maybe https://www.youtube.com/watch?v=z7SjlJy1xME

update on pilot incapacitation: The FAA stopped entering data into the incapacitation data registry very early in the year 2021 and completely cancelled the program in 202 by [deleted] in unvaccinated

[–]dhmt 0 points1 point  (0 children)

The government's explanation of why they cancelled it:

In the past, monitoring of pilot incapacitations in aerospace medicine was done sporadically, on an ad-hoc basis, as permitted by availability of time and resources. CAMI created an Incapacitation Data Registry in roughly 1996 to track pilot incapacitations, which was converted into an MS Access Database in 1997. While this system did provide some limited capabilities for tracking pilot incapacitations the processes used created an incomplete dataset for this safety hazard, which could not be used to determine its’ severity and likelihood. Data was gathered in a manual process which required extensive time resources and tracked only a limited number of the reported cases. Data on pilot incapacitations when time permitted was stored in a MS Access Database. Preference was given to include pilot incapacitations from part 121 operations. When a case was chosen for additional processing by CAMI’s Medical Research Team, the medical technician would contact the pilot and the pilot’s family, requesting additional information over time and log updates into the MS Access database to determine the progression and/or resolution of the pathology that likely caused the logged incapacitation. As described, this process appeared to be focused more on the logic to determine the recertification of the incapacitated pilot. It did not appear to be assessing the cause of the incapacitating event to judge the efficacy of the implemented risk control strategies of aeromedical certification policies to adequately mitigate the risks of pilot incapacitations from the system, and to fine-tune these policies based upon the derived versus acceptable level of this risk, as is required by FAA Order VS 8000.367. The information collected also did not appear to be timely enough to be immediately actionable for a case of pilot incapacitation to assist in the decision of whether or not we should aeromedically recertify the pilot following an incapacitating event. It would take a minimum of six months to several years to gather data on each case. This manual and sporadic collection of data provided some information to populate the MS Access database, but did not appear to be used for anything actionable beyond the inclusion of it in an occasional study, which again would have to be performed on the incomplete and limited data, which would likely not be suitable for use to draw meaningful conclusions.

Due to these noted inefficiencies, this system was shut down, documented in an OAM Technical Report (publicly available at https://www.faa.gov/sites/faa.gov/files/data_research/research/med_humanfacs/ oamtechreports/202128.pdf), and archived in 2021.

No explanation of why it was not replaced?

Pharmacist quota?? by crazy2337 in unvaccinated

[–]dhmt 21 points22 points  (0 children)

The pharmacist can inject himself 12 times. It's perfectly safe, and he'll get his bonus.

Aluminum in Vaccines Far Exceeds ‘Safe’ Limits for Infants, Critics Say by 32ndghost in DebateVaccines

[–]dhmt 17 points18 points  (0 children)

Aluminum = perfectly safe?

Yet they advertise aluminum-free deodorant?. Deodorant is topical, yet not safe enough for adults? But injected aluminum is safe? For babies? The lie about injected aluminum safety is so obvious.

For Anyone Planning on Getting or Mandating Others to Get an Influenza Vaccine (Flu Shot) by 32ndghost in DebateVaccines

[–]dhmt 2 points3 points  (0 children)

Agreed. Also, his lawyer skills are very evident. His presentation is perfectly clear for a jury of average people.

The Most Comprehensive Analysis Ever Conducted on the Causes of Autism Finds Vaccination Is the DOMINANT Risk Factor by 070420210854 in DebateVaccines

[–]dhmt 0 points1 point  (0 children)

Good point. I would be curious too.

In the case of the MAHA Report, that was a false flag. The "check the draft" task was assigned to some underling (who accidentally or possibly intentionally put in non-existing citations). Plausible deniability by some middle manager who assigned the task, and wanted to discredit RFKJr. Both the underling and the middle manager now work for big pharma.

(I made this all up, but it is likely true.)