摘要
采用氮气雾化制粉及冷等静压制取试样 ,通过对快速凝固粉末及冷等静压坯的脱气试验 ,使粉末表面呈非晶态含水的Al2 O3 ·3H2 O氧化膜转变为晶态的脆性的γ Al2 O3 ,并得出结论 :该粉末的最佳脱气温度为 40 0℃左右 ,冷等静压坯的最佳脱气温度为 45 0℃。通过干收集的粉末中的结晶水多于吸附水 ,且其结晶水和吸附水均远远少于水收集粉末中的结晶水和吸附水。
After the sample is prepared with the powder made by nitrogen atomization and cold isostatic compaction(CIC) blank,the degassing test successfully converts the amorphous hydrous Al 2O 3·3H 2O oxide film of the powder′s surface into crystalline brittle γ Al 2O 3.It concludes that the best degassing temperature to rapid solidified powder is about 400℃,and 450℃ to cold isostatics compaction blank.The crystal water of powder dry collected is more than the absorbed water.The crystal and absorbed water in water collected powder are far more than those in dry collected powder.
出处
《金属热处理》
CAS
CSCD
北大核心
2001年第4期37-39,共3页
Heat Treatment of Metals
基金
国家"九五"攻关项目
关键词
快速凝固
耐热铝合金
真空脱气
合金粉末
rapid solidification
heat resisting aluminum alloy
vacuum degassing
