Volume 0,Issue 6,1995 Table of Contents
1995(6):1-9.
Abstract:
In the paper, authors present the basic principles and technological features of the new processing technologies of the metalmatrix composite, such as self propagating high temperature synthesis.XD synthesis, Directed metal oxidation (Dimox) synthesis, Lancide synthesis and Spray- Atomized and codeposied synthesis,illustrate the mechanical properties of the metal matrix composites produced by the above- mentioned approaches, analysis advantages and shortcomings of different approacbes and pointout that SHS,XD,Dimox and Lanxide approach belong to the in stiu processing. Composites containing reinforcement generated in stiu are likely to have the advantages of .virgin uncontaminated intedeces and can be fur,ther tailored during sikudufucation processing to promote adequate bonding between the matrix and the reinforcements. In addition,this route of synthesis of composites may be more ecnomic as the reinforcements are not tnanufactured and handled separately.The shortcomings of the .in stiu processing are that the composites POssess low density and the quantity of the reinforcements can not be controlled easily. Spray atomization and codeposition processes belong to the rapid solidification technology.The basic thenes of the new processing technologies above should be created as the processiny,technologics are imprproved further.
In the paper, authors present the basic principles and technological features of the new processing technologies of the metalmatrix composite, such as self propagating high temperature synthesis.XD synthesis, Directed metal oxidation (Dimox) synthesis, Lancide synthesis and Spray- Atomized and codeposied synthesis,illustrate the mechanical properties of the metal matrix composites produced by the above- mentioned approaches, analysis advantages and shortcomings of different approacbes and pointout that SHS,XD,Dimox and Lanxide approach belong to the in stiu processing. Composites containing reinforcement generated in stiu are likely to have the advantages of .virgin uncontaminated intedeces and can be fur,ther tailored during sikudufucation processing to promote adequate bonding between the matrix and the reinforcements. In addition,this route of synthesis of composites may be more ecnomic as the reinforcements are not tnanufactured and handled separately.The shortcomings of the .in stiu processing are that the composites POssess low density and the quantity of the reinforcements can not be controlled easily. Spray atomization and codeposition processes belong to the rapid solidification technology.The basic thenes of the new processing technologies above should be created as the processiny,technologics are imprproved further.
1995(6):10-20.
Abstract:
In order to give a necessary information for the research on Bi system superconductor, the newest results of phase relations in Bi-Pb-Sr-Ca-Cu-O system since 1991 have been reviewed, which include Ca-Cu-O ternary, Sr-Cu-O ternary, Bi2O3-CuO pseduo-binary, (Bi, Pb)2Sr2CuOx-CaCuO2 pseduobinary, Bi2O3-CaO-CuO pseduo-ternary. Bi2O3-SrO-CaO pseduo-ternary and Bi2O3-SrO-CuO-MO(M =Ca, Pb) pseduo-quarternary system. In addition. the new result of Ag-Cu-Pb-O system has also been discussed which is related with Bi(2223) / Ag tape and Ag-doped Bi-based Superconductor.
In order to give a necessary information for the research on Bi system superconductor, the newest results of phase relations in Bi-Pb-Sr-Ca-Cu-O system since 1991 have been reviewed, which include Ca-Cu-O ternary, Sr-Cu-O ternary, Bi2O3-CuO pseduo-binary, (Bi, Pb)2Sr2CuOx-CaCuO2 pseduobinary, Bi2O3-CaO-CuO pseduo-ternary. Bi2O3-SrO-CaO pseduo-ternary and Bi2O3-SrO-CuO-MO(M =Ca, Pb) pseduo-quarternary system. In addition. the new result of Ag-Cu-Pb-O system has also been discussed which is related with Bi(2223) / Ag tape and Ag-doped Bi-based Superconductor.
1995(6):21-28.
Abstract:
The possible slipping and twinning modes in hop metals are summarized. The slipping plane includes (0000) hasal. (1100)prismatic plane and c-type. c+a-type Pyramidal plane. {1012}. {1121}and {112 2}are the primary twinning modes. {1011} {1124}and {1123}type twins are possible to appear in Ti and Zr.The relationship between slipping mode and the tasting temperature in Ti and Zr is discussed. The slipping planes arranged in order of ease of operation are prismatic.pyramidal and hasal planes.
The possible slipping and twinning modes in hop metals are summarized. The slipping plane includes (0000) hasal. (1100)prismatic plane and c-type. c+a-type Pyramidal plane. {1012}. {1121}and {112 2}are the primary twinning modes. {1011} {1124}and {1123}type twins are possible to appear in Ti and Zr.The relationship between slipping mode and the tasting temperature in Ti and Zr is discussed. The slipping planes arranged in order of ease of operation are prismatic.pyramidal and hasal planes.
1995(6):29-31.
Abstract:
This paper describes the main character and important application of beryllium materials in the world high technology, as well as the production and application of beryllium in China.
This paper describes the main character and important application of beryllium materials in the world high technology, as well as the production and application of beryllium in China.
1995(6):32-37.
Abstract:
Miedema theory has been applied to studying systematically the thermodynamical properties of rare earth-magnesium. The eding enthalpies of liquid alloys and formation enthalpies of intermetallic compounds have been calculated. The calculations agree well wity the available experimental resultS or the predictions of other authors.
Miedema theory has been applied to studying systematically the thermodynamical properties of rare earth-magnesium. The eding enthalpies of liquid alloys and formation enthalpies of intermetallic compounds have been calculated. The calculations agree well wity the available experimental resultS or the predictions of other authors.
1995(6):38-42.
Abstract:
Pole figure and inverse pole figure are introduced firstly, and both of them have been widely used in texture analysis as they are convenient in determining and recognizing. Then, the following are presented in details: the orientation distribution function (ODF), principle and calculation -process. The influence of Friedel Law on the results of ODF analysis, as well as much attempt to get complete ODF are also introduced in the present paper. Maximun Entropy Method applied to ODF analysis is considered to be better way for quantitative texture analysis. Texture quantitative result will be more real if Maximum Entropy Method is introduced to ODF analysis.
Pole figure and inverse pole figure are introduced firstly, and both of them have been widely used in texture analysis as they are convenient in determining and recognizing. Then, the following are presented in details: the orientation distribution function (ODF), principle and calculation -process. The influence of Friedel Law on the results of ODF analysis, as well as much attempt to get complete ODF are also introduced in the present paper. Maximun Entropy Method applied to ODF analysis is considered to be better way for quantitative texture analysis. Texture quantitative result will be more real if Maximum Entropy Method is introduced to ODF analysis.
1995(6):42-47.
Abstract:
利用正交设计实验的方法安排了一组Ｚｒ－Ｎｂ二元合金，考查了两个水平的Ｎｂ含量，淬火温度，时效温度，时间以及合金组织状态对耐蚀性能的影响，５００℃蒸汽腐蚀结果表明，Ｎｂ含量控制在固溶极限范围内Ｚｒ－Ｎｂ二元含金具有较佳的耐蚀性，而当Ｎｂ含量较高时，采用双相区淬火，较高温度长时间时效处理是获得较好耐蚀性的工艺方向。
利用正交设计实验的方法安排了一组Ｚｒ－Ｎｂ二元合金，考查了两个水平的Ｎｂ含量，淬火温度，时效温度，时间以及合金组织状态对耐蚀性能的影响，５００℃蒸汽腐蚀结果表明，Ｎｂ含量控制在固溶极限范围内Ｚｒ－Ｎｂ二元含金具有较佳的耐蚀性，而当Ｎｂ含量较高时，采用双相区淬火，较高温度长时间时效处理是获得较好耐蚀性的工艺方向。
1995(6):48-52.
Abstract:
Apresentation is given of the discribtion of wave pattern,vartex, meten zone in the interface of explosive bonded layer metal composite by means of melallographic observation. The issues, which should be pay attention to also introduced for explosive bonded layer metal composite.
Apresentation is given of the discribtion of wave pattern,vartex, meten zone in the interface of explosive bonded layer metal composite by means of melallographic observation. The issues, which should be pay attention to also introduced for explosive bonded layer metal composite.
1995(6):53-57.
Abstract:
研究了加工热处理工艺对Ｚｒ－４合金管材机械性能和耐蚀性能的影响。实验表明，工序中加入β淬火处理，可以改善合金的性能。挤压前坯料β淬火后直接轧至成品的管材，再结晶退火后在３７５℃下的屈服强度为２０４￣２１８ＭＰａ，较经过多次轧制到成品的管材，其屈服强度提高了４２％￣４７％。加工过程中降低中间退火温度，减少加工道次的管材，在相同条件下的屈服强度为１８０￣１８８ＭＰａ。对合金管材进行了４００℃和５００℃
研究了加工热处理工艺对Ｚｒ－４合金管材机械性能和耐蚀性能的影响。实验表明，工序中加入β淬火处理，可以改善合金的性能。挤压前坯料β淬火后直接轧至成品的管材，再结晶退火后在３７５℃下的屈服强度为２０４￣２１８ＭＰａ，较经过多次轧制到成品的管材，其屈服强度提高了４２％￣４７％。加工过程中降低中间退火温度，减少加工道次的管材，在相同条件下的屈服强度为１８０￣１８８ＭＰａ。对合金管材进行了４００℃和５００℃
1995(6):58-63.
Abstract:
用Ｙ、Ｂａ、Ｃｕ的三氟乙酸盐溶液，通过ＭＯＤ法在ＳｒＴｉＯ３（１００）衬底上成功地制得了黑色的、表面光滑的ＹＢＣＯ超导薄膜。研究了两种理想的成膜烧结工艺，对膜进行了物相研究。结果表明：在８５０℃，潮湿氧气氛中烧结的薄膜具有一定的择优取向；而在７５０℃，潮湿的低氧气氛中烧结的薄膜则具有高度的ｃ轴织构，前者的Ｔｃ（ｏｎｓｅ）≈９０Ｋ，Ｔｃ０≈７９Ｋ，较低的氧分压似乎有利于ｃ轴结构。
用Ｙ、Ｂａ、Ｃｕ的三氟乙酸盐溶液，通过ＭＯＤ法在ＳｒＴｉＯ３（１００）衬底上成功地制得了黑色的、表面光滑的ＹＢＣＯ超导薄膜。研究了两种理想的成膜烧结工艺，对膜进行了物相研究。结果表明：在８５０℃，潮湿氧气氛中烧结的薄膜具有一定的择优取向；而在７５０℃，潮湿的低氧气氛中烧结的薄膜则具有高度的ｃ轴织构，前者的Ｔｃ（ｏｎｓｅ）≈９０Ｋ，Ｔｃ０≈７９Ｋ，较低的氧分压似乎有利于ｃ轴结构。
1995(6):64-70.
Abstract:
The recent progress of the practical application of catalytic kinetic photo-metric method in noble metals is described.
The recent progress of the practical application of catalytic kinetic photo-metric method in noble metals is described.
1995(6):71-74.
Abstract:
The developing of facility for Al-Mo fusion alloying is introduced. By using the facility the environment will not be polluted, the working conditions can be improved. What's more, we' ll make the Al-Mo alloy with high quality and low cost, and it will be loaded and unloaded more easily and bring great economic income.
The developing of facility for Al-Mo fusion alloying is introduced. By using the facility the environment will not be polluted, the working conditions can be improved. What's more, we' ll make the Al-Mo alloy with high quality and low cost, and it will be loaded and unloaded more easily and bring great economic income.
