Originally posted by sxll at 2011-01-11 22:25:17:
在一定温度下氧化一段时间，发黄一般是有微量的残存碳，600度以上就可以氧化。

Originally posted by sxll at 2011-01-13 10:37:18:
最好氧化一段时间，开始烧结前让他全部氧化

Originally posted by feifeishun at 2011-01-13 15:44:48:
你的烧结温度不高么？如果是1000以上的，挥发物不会有什么颜色沉积吧？除非氧化气氛不够

Originally posted by 阿水889 at 2011-01-13 13:13:47:
半个小时就可以了吧，500-700之间有机物挥发掉，你可以查一下一般陶瓷烧结都有个排胶工艺

Originally posted by peter_along at 2011-01-13 16:19:00:

但是我烧结到1000多呢   有机物不都挥发完了吗

Originally posted by 阿水889 at 2011-01-13 18:46:30:

如果你升温很快的话，挥发不彻底的

Originally posted by peter_along at 2011-01-13 19:46:25:

很慢了。好几十个小时

Originally posted by wqh_04 at 2011-01-13 20:47:17:
推测可能和你高温保火和刹火阶段窑内气氛有关。比如烧液化气，很可能在保火阶段空气比例少或者气量偏高形成了还原气氛（这种情况下，窑本身应该没有调好，导致热量被大量带走，燃气利用率低）。同样道理，刹火时候 ...

Originally posted by peter_along at 2011-01-14 10:55:28:

使用的是等压烧结，硅钼棒炉子，我个人觉得可能是脱脂的时间太慢了！在有机物挥发阶段

Originally posted by 阿水889 at 2011-01-13 18:46:30:

如果你升温很快的话，挥发不彻底的

Originally posted by yangyxj at 2011-01-16 13:13:34:

同意

Originally posted by wqh_04 at 2011-01-14 22:25:33:


请您一定要帮我逐条分析下上面的话具体是什么意思，谢谢？

Originally posted by wqh_04 at 2011-01-18 20:01:49:
无语。你当大家都是你啊。逻辑这么跳跃。没什么好说的了，自个玩吧。

Originally posted by 陶瓷宝贝 at 2011-01-24 23:58:15:
如果是局部发黄，可能是排水期操作不当。总之，合理的烧成曲线最关键。可参考同类陶瓷的烧成曲线。

Originally posted by peter_along at 2011-01-25 12:11:26:
是整体发黄！ 内部也发黄

23楼: Originally posted by 陶瓷宝贝 at 2011-01-24 23:58:15
如果是局部发黄，可能是排水期操作不当。总之，合理的烧成曲线最关键。可参考同类陶瓷的烧成曲线。