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Lab talk, the good, the bad, and the ugly
Zirconium
Need help and guide, open discussion for everyone. Topic: My grey and ugly color zirconia
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<blockquote data-quote="CoolHandLuke" data-source="post: 233200" data-attributes="member: 4850"><p>what an odd program.</p><p></p><p>if you can, make a secondary program for testing. bare with me, i havent written a sintering program in a long time, but from memory this is what i recall.</p><p></p><p>200C for 30 mins, rise 3C/min to 1300C hold for 60 min ramp 2C/min to 1500 hold for 30. slow cool. slow as possible. if this program gets to 1500C at 23:00 (11pm) then ensure cooling takes until 06:00 (6am) to get to room temp.</p><p></p><p>try it a few times. </p><p></p><p>most zirconia ends up sintering at 800c anyway, the high temp is to help translucency. slow cooling ensures no cracks. but sintering program alone might not be enough to overcome your problems.</p><p></p><p>i like many brands. most of them can work well with a careful staining procedure. the best results (usually, not always) come as a kit. for example Cubex2 pucks and Cubex2 stains. once you get the hang of it and adjust your procedure, it can work well. likewise Jensen XT. </p><p>Nexxzr. ZirkonZahn. bundles of stain and pucks.</p><p></p><p>it can also be preferable to use sintering beads in your crucible.</p><p></p><p>Bruxzir was designed for one purpose. to be cheap. thats all. is that something you want to stick your name to?</p></blockquote><p></p>
[QUOTE="CoolHandLuke, post: 233200, member: 4850"] what an odd program. if you can, make a secondary program for testing. bare with me, i havent written a sintering program in a long time, but from memory this is what i recall. 200C for 30 mins, rise 3C/min to 1300C hold for 60 min ramp 2C/min to 1500 hold for 30. slow cool. slow as possible. if this program gets to 1500C at 23:00 (11pm) then ensure cooling takes until 06:00 (6am) to get to room temp. try it a few times. most zirconia ends up sintering at 800c anyway, the high temp is to help translucency. slow cooling ensures no cracks. but sintering program alone might not be enough to overcome your problems. i like many brands. most of them can work well with a careful staining procedure. the best results (usually, not always) come as a kit. for example Cubex2 pucks and Cubex2 stains. once you get the hang of it and adjust your procedure, it can work well. likewise Jensen XT. Nexxzr. ZirkonZahn. bundles of stain and pucks. it can also be preferable to use sintering beads in your crucible. Bruxzir was designed for one purpose. to be cheap. thats all. is that something you want to stick your name to? [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Zirconium
Need help and guide, open discussion for everyone. Topic: My grey and ugly color zirconia
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