Volume 0,Issue 1,1996 Table of Contents
1996(1).
Abstract:
he structures of the oxide film have been studied for Zr-2.5Nb and Zr-1.0Nb-0.5Fe alloys. XRD analysis shows that the oxide film of Zr-2.5Nb alloy consists of monoclinic ZrO2 ((ZrO2)M) and (ZrO2)x. The oxide film of Zr-1.0Nb-0.5Fe alloy has been investigated by means of TIM. Clear grain and twin-substructure have been observed in the oxide film of Zr-1.0Nb-0.5Fe alloy.
he structures of the oxide film have been studied for Zr-2.5Nb and Zr-1.0Nb-0.5Fe alloys. XRD analysis shows that the oxide film of Zr-2.5Nb alloy consists of monoclinic ZrO2 ((ZrO2)M) and (ZrO2)x. The oxide film of Zr-1.0Nb-0.5Fe alloy has been investigated by means of TIM. Clear grain and twin-substructure have been observed in the oxide film of Zr-1.0Nb-0.5Fe alloy.
1996(1).
Abstract:
探讨了Ｐｄ－８ａｔ％Ｙ合金的有序无序转变。利用高温电阻法、ＸＲＤ法检验了该类合金的有序无序转变温度及相组成。结果表明，该类合金中存在Ｐｄ３Ｙ型长程有序相。Ｐｄ—８．２２ａｔ％Ｙ经９２０℃淬火＋７５０℃退火所得的有序结构较强。Ｐｄ—７．５２ａｔ％Ｙ有序无序转变温度Ｔｃ＝７００±１０℃。
探讨了Ｐｄ－８ａｔ％Ｙ合金的有序无序转变。利用高温电阻法、ＸＲＤ法检验了该类合金的有序无序转变温度及相组成。结果表明，该类合金中存在Ｐｄ３Ｙ型长程有序相。Ｐｄ—８．２２ａｔ％Ｙ经９２０℃淬火＋７５０℃退火所得的有序结构较强。Ｐｄ—７．５２ａｔ％Ｙ有序无序转变温度Ｔｃ＝７００±１０℃。
1996(1).
Abstract:
he effect of Al content on chromaticity of 18K Au-Cu-Al cast alloy has been studied by adopting of modern chromaticity system and X-ray analyse. It is found that Al content changes the color of Au-Cu-Al alloy. and play the role of bleaching.
he effect of Al content on chromaticity of 18K Au-Cu-Al cast alloy has been studied by adopting of modern chromaticity system and X-ray analyse. It is found that Al content changes the color of Au-Cu-Al alloy. and play the role of bleaching.
1996(1).
Abstract:
研究了热处理对金属陶瓷冲击韧性和断裂韧性的影响。结果表明，固溶处理能够提高金属陶瓷的冲击韧性和断裂韧性，其中１１５０℃固溶处理效果最好。固溶强化效应的增加、位错密度的提高及硬质相邻接度的减少被认为是固溶处理改善韧性的主要原因。固溶处理后再进行时效处理能进一步提高金属陶瓷的韧性，因为时效消除了金属陶瓷试样的内应力及粘结相中析出了强化相γ′。
研究了热处理对金属陶瓷冲击韧性和断裂韧性的影响。结果表明，固溶处理能够提高金属陶瓷的冲击韧性和断裂韧性，其中１１５０℃固溶处理效果最好。固溶强化效应的增加、位错密度的提高及硬质相邻接度的减少被认为是固溶处理改善韧性的主要原因。固溶处理后再进行时效处理能进一步提高金属陶瓷的韧性，因为时效消除了金属陶瓷试样的内应力及粘结相中析出了强化相γ′。
1996(1).
Abstract:
here are two chief technological factors affecting the industrial progress of metal injection molding(MIM).which are the production of powders for MIM and the MIM process. These two factors are analyzed systematically and the present status of MIM technology is described.
here are two chief technological factors affecting the industrial progress of metal injection molding(MIM).which are the production of powders for MIM and the MIM process. These two factors are analyzed systematically and the present status of MIM technology is described.
1996(1).
Abstract:
It has been found that the refining effect can be improved with increasing electric current. By means of the experiment on elec-flux refining of the Al-4.5wt%Cu alloy. Furthermore, the grain morphalogy changed from small equiaxial grain to coarse transcrystalline grain. The same refining effect also can be obtained through circulating refinement under the condition of low current.
It has been found that the refining effect can be improved with increasing electric current. By means of the experiment on elec-flux refining of the Al-4.5wt%Cu alloy. Furthermore, the grain morphalogy changed from small equiaxial grain to coarse transcrystalline grain. The same refining effect also can be obtained through circulating refinement under the condition of low current.
1996(1).
Abstract:
研究了直接利用空气－乙炔火焰原子吸收法测定钛中钙。利用锶盐作干扰抑制剂，在不分离钛基体的情况下直接测定钛中微量钙，测定最低含量为０．０５％。多次测定样品回收率在８８％～１０８％之间，相对标准偏差为３．４％。灵敏度比仅使用氧屏蔽时提高了２倍多，且方法简便快速，可适用于钛及某些钛合金中钙的测定。
研究了直接利用空气－乙炔火焰原子吸收法测定钛中钙。利用锶盐作干扰抑制剂，在不分离钛基体的情况下直接测定钛中微量钙，测定最低含量为０．０５％。多次测定样品回收率在８８％～１０８％之间，相对标准偏差为３．４％。灵敏度比仅使用氧屏蔽时提高了２倍多，且方法简便快速，可适用于钛及某些钛合金中钙的测定。
1996(1):5-9.
Abstract:
he pringciple and advantages of SHS-casting is introduced. The experimental results on SHS-casting of Ni3Si based intermetallic ring products and centrifugal SHS casting of the metal-ceramic pipes are presented in this paper. The factors influencing the SHS casting process are discussed.
he pringciple and advantages of SHS-casting is introduced. The experimental results on SHS-casting of Ni3Si based intermetallic ring products and centrifugal SHS casting of the metal-ceramic pipes are presented in this paper. The factors influencing the SHS casting process are discussed.
1996(1):10-12.
Abstract:
he effect of grain size on the phase transformation of nano materials has been studied with Heisenberg model. The quantitative relation between grain size and phase transformation temperature has been built up. The simulated results show that the theory matches the experimental data very well.
he effect of grain size on the phase transformation of nano materials has been studied with Heisenberg model. The quantitative relation between grain size and phase transformation temperature has been built up. The simulated results show that the theory matches the experimental data very well.
1996(1):17-20.
Abstract:
详细研究了ＴＤ２合金（Ｔｉ３Ａｌ基）６５０℃下低循环应变疲劳性能。依据实验数据利用回归分析计算出应变疲劳参数，得出该合金应变疲劳寿命预测公式，并分析了应力—应变行为。实验结果表明Ｔｉ３Ａｌ基合金应变疲劳性能优于ＧＨ３３高温合金，与ＤＺ４高温合金７６０℃水平相当。在循环过程中表现出循环硬化的特征。同时还讨论了ＴＤ２合金疲劳裂纹的起源与扩展。
详细研究了ＴＤ２合金（Ｔｉ３Ａｌ基）６５０℃下低循环应变疲劳性能。依据实验数据利用回归分析计算出应变疲劳参数，得出该合金应变疲劳寿命预测公式，并分析了应力—应变行为。实验结果表明Ｔｉ３Ａｌ基合金应变疲劳性能优于ＧＨ３３高温合金，与ＤＺ４高温合金７６０℃水平相当。在循环过程中表现出循环硬化的特征。同时还讨论了ＴＤ２合金疲劳裂纹的起源与扩展。
1996(1):33-36.
Abstract:
选用平均粒度为０．８～３．０μｍ的４种不同粒度钨粉进行粉末搭配研究。结果表明：当两种粉末性能相差较大时，即使其平均粒度很细，搭配粉末烧结坯［质量］密度也低，且微观组织极不均匀；当两种粉末性能相近时，搭配粉末烧结［质量］密度较高，且微观组织均匀。并用搭配粉末烧结模型对该现象进行了阐释。
选用平均粒度为０．８～３．０μｍ的４种不同粒度钨粉进行粉末搭配研究。结果表明：当两种粉末性能相差较大时，即使其平均粒度很细，搭配粉末烧结坯［质量］密度也低，且微观组织极不均匀；当两种粉末性能相近时，搭配粉末烧结［质量］密度较高，且微观组织均匀。并用搭配粉末烧结模型对该现象进行了阐释。
1996(1):37-40.
Abstract:
he doped tungsten wires of resistance to high-temperature creep-sag have been successfully produced. By means of liquid-liquid mixing easily water-soluable AMT with K. Al. Si and spraying and drying. The properties of the doping powders, bars and wires of new process are different from those of common doping method. The average value of remanent elongation is less than 1.0mm for several high-temperature creep-sag tests.The proportion of first-grade wires is about 100%.
he doped tungsten wires of resistance to high-temperature creep-sag have been successfully produced. By means of liquid-liquid mixing easily water-soluable AMT with K. Al. Si and spraying and drying. The properties of the doping powders, bars and wires of new process are different from those of common doping method. The average value of remanent elongation is less than 1.0mm for several high-temperature creep-sag tests.The proportion of first-grade wires is about 100%.
1996(1):48-51.
Abstract:
介绍了一种银离子杀菌剂的制备法。含银５０～５００ｍｇ／Ｌ的这种杀菌剂可杀灭致病的大肠杆菌、金黄色葡萄球菌、枯草菌和乙肝病毒。可用于空气、冷却循环水、游泳池水和电话机等的消毒灭菌。
介绍了一种银离子杀菌剂的制备法。含银５０～５００ｍｇ／Ｌ的这种杀菌剂可杀灭致病的大肠杆菌、金黄色葡萄球菌、枯草菌和乙肝病毒。可用于空气、冷却循环水、游泳池水和电话机等的消毒灭菌。
