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Abstract:The Co free over stoichiometric alloy Ml (NiMnAlFe) 5.4 were prepared using conventional cast, rapid solidification (melt spinning) and annealing processes. The microstructure and electrochemical properties of these alloys were investigated comparatively. XRD analyses show that three kinds of the alloys are all composed of main phase with CaCu 5 structure and the second phase (AlNi 3), but the amount of the second phase in the melt spinning alloy is less, and the second phase in annealed alloy disappeared. The electrochemical analyses show that the melt spun and annealed alloys all have better cycling stability than that of conventional cast alloy, but their discharge capacity and high rate dischargeability are little lower than that of conventional cast alloy.

Abstract:The oxidation behavior of MoSi 2 Mo 5Si 3 composites at low temperature has been investigated by thermogravimetric analyses, X ray diffraction technique and SEM. The results showed that the oxidation was accelerated with the increase of Mo 5Si 3. "PEST" phenomena was caused in couse of low temperature oxidation when the content of Mo 5Si 3 exceeded 16%(mass fraction). The SiO 2 films were not distributed continuously on the surface of composite due to great amount of MoS 3 whiskers, and oxidation was accelerated.

Abstract:研究了機械合金化過程中粉末形態(tài)和微結(jié)構(gòu)的變化 ,通過掃描電子顯微鏡 ,清楚地觀察到粉末顆粒的破碎和集聚復合過程 ,以及復合顆粒的形成。通過 X射線衍射詳細分析了球磨過程中的晶格常數(shù)、晶粒度和微觀應(yīng)變的變化。球磨的最終產(chǎn)物為非晶 ,α- Fe(Mo)和 Mo。通過優(yōu)化工藝 ,Nd Fe1 0 .5Mo1 .5Nx 氮化物獲得了較佳的磁性能

Abstract:CaS:Ce 3+ ,Sb 3+ phosphors with the green color were firstly synthesized by microwave radiation method. The phosphor materials have been characterized by XRD?SEM and the fluorescent spectroscopy. The result shows that the CaS:Ce 3+ , Sb 3+ phosphors possess the cubic structures. The different shapes and submicro scales of the phosphors can be obtained upon doping the different fluxes in the same concentration of Sb 3+ ion in a microwale field. Ce 3+ can sensitize Sb 3+ , and enhance the fluorescent intensity of CaS:Sb 3+ efficiently.

Abstract:The electrical and optical properties of CdIn 2O 4 films produced by RF reactive sputtering have been investigated. The IR reflection R of the CdIn 2O 4 films as a function of oxygen concentration and heat treatment is discussed. Experiment results show that the IR reflection R of the CdIn 2O 4 films is very high, indicating that the CdIn 2O 4 films are good IR reflection films and can be used as heat preservation films.

Abstract:Progress in magnetic functional materials and applications since 1996 is reviewed, the contents for 1999 2000 include: (1) giant magnetdresistance and giant magnetoimpedance materials; (2) giant magnetooptical effect and magnetooptical imaging new materials; (3) magnetic fluid for extensive applications; (4) microwave gyromagnetic devices; (5) magnetically levitated vehicles.

Abstract:作為高溫結(jié)構(gòu)材料，TiAl金屬間化合物在航空、航天領(lǐng)域頗具應(yīng)用潛力。而燃燒合成技術(shù)正被越來越多地用于制備TiAl金屬間化合物。為了有效地控制反應(yīng)過程從獲得理想的組織結(jié)構(gòu)，必須深入了解其反應(yīng)機制。本文綜述了燃燒合成TiAl反應(yīng)機制的文獻報道。

Abstract:Aluminum nitride(AlN) has excellent thermal, electrical and mechanical properties, and attracts more and more attention. This paper relates the development of fabricating high thermal conductivity AlN ceramics process, including powder preparation, molding, sintering. It is suggested that research on low cost powder preparation technology and net shape molding technology are valuable.

Abstract:根據(jù)固體與分子經(jīng)驗電子理論，通過鍵距差（BLD）方法，計算了Ti(C0.7,N0.3)的價電子結(jié)構(gòu)，討論了其價電子結(jié)構(gòu)與硬度和塑性間的關(guān)系。指出Ti(C,N)固溶體的硬度較TiC，（Ti,W)C低，較TiN高，其塑性較TiC,(Ti,W)C高，較TiN低。并指出材料晶體相同時，其價電子結(jié)構(gòu)的最強鍵nA可作為硬度高低的比較指標，其∑n.可用來比較塑性的相對高低。

Abstract:DCSB method is used to evaluate the burn resistant properties of Ti 40, Alloy C and Ti 6 4 three atmosphere conditions in this paper. The results show that Ti40 and Alloy C display good burn resistance as compared with Ti 6 4, and that the addition of nitrogen into air can decrease burning rate of titanium alloys. Burning interfaces were observed and analyzed by SEM and EDAX. It is found that which indicates that vanadium is preferentially immigrated to the surface to form V 2O 5 upon Ti40 and Alloy C burning. As a result the surface layer in burning zone is V enriched and Cr leaned, while the burned products and the oxidized layer close to matrix interface are V leaned and Cr enriched. The mixed oxidized layer is very dense, and can inhibite oxygen diffusion into the matrix, and prevent V in the matrix from diffusion into burning zone.Although Al can be preferentially immigrated to the surface to form Al 2O 3 upon Ti 6 4's burning, but it is too less in content to improve the alloy's burn proof ability.

Abstract:The hardening curve exhibits sigmoid shape in metastable austenite stainless steel at low temperature due to strain induced martensite transformation during deformation. The hardening exponent n values derived from Hollomon equation in each 1 5% of nominal strain are found not to be constant. Furthermore, both the n values and the hardening rate present parabola with increase of strain, while n values decrease correspondingly with increase of strain rate.

Abstract:An experimental set up of travelling magnetic field excited by supper power permanent magnet was designed, which has obviously refine function for metal solidification structure. Theory of travelling magnetic field excited by permanent magnet was researched: mathematics model was built, analysis solutions of magnetic component force parallel to slab was obtained. It was confirmed that the magnetic component force was existed through round and slab of cast metal experiment. When travelling magnetic field was imposed properly during metal solidification, solidification structure of 100% fine equiaxed crystal could be obtained.

Abstract:系統(tǒng)研究了Ti46Al8.5Nb0.1C0.2B合金簡稱0．1C0.2B合金在760℃～815℃，140MPa-400MPa的蠕變條件下的蠕變性能和蠕變機制。研究表明，在同等蠕變條件下同其它鈦鋁合金相比，0．1C0.2B合金最小蠕變速率降低2倍－10倍，蠕變應(yīng)力提高50MPa-150MPa，如此優(yōu)越蠕變抗力主要來自于高鈮合金化對鈦鋁合金的固溶強化及間隙原子的沉淀強化。

Abstract:Diffusion joining of beryllium and HR 1 stainless steel with interlayer by hot isostatic pressing(HIP) (Cu layer or Cu/Ni layer) was investigated in this paper. The basic evaluations of bonded joints were made through metallurgical observation, SEM, AES, XRD, MPM and tensile testing. For Be/Cu/316L joint, Cu interlayer blocks the diffusion of Fe into Be, but Ni is gathered at Cu/316L interface and the crack is formed at this field. For Be/Cu/Ni/316L joint, the diffusion depth increases further. Change of Composition, mechanical property with distance in diffusion zone is smooth, and the tensile strength is about 50 MPa.

Abstract:詳細研究了過化學計量經(jīng)無鈷合金Ml(Ni0.82Mn0.07Al0.06Fe0.05)5.4在常規(guī)熔鑄、快速凝固、退火處理不同制備條件下的組織結(jié)構(gòu)和電化學性能。X射線衍射（XRD）分析表明，常規(guī)熔鑄合金由CaCu5型主相加少量的第二相（AlNi3)組成，而快速凝固合金的第二相析出得到一定程度的抑制，常規(guī)熔鑄合金經(jīng)1000℃退火處理后，部分第二相溶解消失。電化學測試表明，與常規(guī)熔鑄合金相比，快速凝固和退火處理均大大提高了合金的電化學循環(huán)穩(wěn)定性，但活化性能和高倍率放電性能稍有下降?？焖倌毯辖鸬碾娀瘜W容量有所提高，而退火合金的放電容量與常規(guī)熔鑄合金的基本相當。

Abstract:通過熱重分析（TGA）、X射線衍射（XRD）和掃描電鏡（SEM）研究了MoSi2-Mo5Si3復合材料的低溫氧化行為，指出材料低溫氧化時，隨Mo5Si3量增多，材料氧化加劇，當Mo5Si3含量超過16％（質(zhì)量分數(shù)）時發(fā)生“PEST”現(xiàn)象，所形成的SiO2由于MoS3晶須的大量存在，使其不能均勻連續(xù)地分布于材料表面，從而加劇了氧化。

Abstract:將組成分別為Nd3.5Dy30.0Fe65.5Nb0.4B1.1和Nd33.5Fe30.5Co35.0Nb0.4B1.1（質(zhì)量百分數(shù)）的鑄態(tài)Nd-Fe-B合金按比例進行混合，使合金中的（Dy Co)總量基本保持不變，讓Dy和Co的相對含量發(fā)生變化，采用粉末冶金工藝生產(chǎn)Nd-Fe-B磁體。結(jié)果發(fā)現(xiàn)：磁體的Br隨著含Co合金比例的增加線性增大，iHc隨著含Co合金比例的增加線性減小，但磁體的磁通可逆溫度系數(shù)卻只在較小的范圍內(nèi)變化。這說明當（Dy Co)含量保持在一定范圍內(nèi)時，既可以通過增加Dy含量降低磁體的溫度系數(shù)也可以通過增加Co含量降低磁體的溫度系數(shù)。在此研究的基礎(chǔ)上，通過調(diào)整初始合金的成分和工藝,制成了磁性能為18MGOe/23kOe-25MGO3/15kOe、磁通可逆溫度系數(shù)為－0．018％／℃-0.026%/℃的高穩(wěn)定性，低溫度系數(shù)Nd-Fe-B系列磁體。

Abstract:對Fe Cr改性多元氮化物薄膜，即（TiFeCr)N多元膜的高溫氧化行為進行了研究，結(jié)果表明：（1）這種多元膜膜在600℃以上溫度下的氧化增重均低于TiN膜，加熱至600℃膜層仍保持良好的光澤，加熱至800℃膜層仍保持完整，沒有類似TiN膜的局部脫落現(xiàn)象，這種多元膜具有優(yōu)于TiN的抗高溫氧化性能；（2）600℃氧化1h后，X射線衍射（XRD）譜上沒有出現(xiàn)類似于TiN場合下出現(xiàn)的氧化銅的譜線。說明這種多元膜可以有效地抑制銅基體的氧化，具有優(yōu)于TiN膜的保護性能。

Abstract:研究了機械合金化過程中粉末形態(tài)和微結(jié)構(gòu)的變化，通過掃描電子顯微鏡，清楚地觀察到粉末顆粒的破碎和集聚復合過程，以及復合顆粒的形成。通過X射線衍射詳細分析了球磨過程中的晶格常數(shù)、晶粒度和微觀應(yīng)變的變化。球磨的最終產(chǎn)物為非晶，α-Fe(Mo)和Mo。通過優(yōu)化工藝，NdFe10.5Mo1.5Nx氮化物獲得了較佳的磁性能。

Abstract:The effect of W content and preheat temperature on phase components and powder size of combustion synthesized product in Ti W C system were studied. With the decrease of W content, the combustion temperature is increased and the combustion reaction mechanism is changed to melt solution prepicitation from diffusion solution in solid state. Preheating mixtures would result in the same effect. As a result, the combustion reaction becomes complete, single phase (Ti, W)C is synthesized advantageously and the powder size increases with the decrease of W content and the increase of preheat temperature. Meanwhile, the necessary preheat temperature for synthesizing single phased(Ti, W)C increases with the increase of W content.

Abstract:首次采用微波輻射法快速合成了亞超細CaS:C^3 ,Sb^3 高效綠光磷光體，發(fā)現(xiàn)Ce^3 與Sb^3 離子之間存在著能量傳,租是屬于多極子相互作用的共振傳遞，因而Ce^3 對CaS:Sb^3 的發(fā)光有明顯的敏化和增強。微波場作用下合成的雙摻磷光體的激發(fā)峰與發(fā)射峰值分別恒定在259nm 和523nm處，并沒有像傳統(tǒng)高溫固相合成法那樣，隨摻雜離子濃度的增大而發(fā)生紅移現(xiàn)象。SEM照片顯示，采用含不同一價陽離子（Na^ ,K^ ,NH4^ )無機鹽作助熔劑制得的亞超細CaS:Ce^3 ,Sb^3 磷光體平均粒徑為300nm-500nm，但其晶體形貌分別為立方形、球形和團聚狀的雪花形，其中球形磷光體熒光最強。

Abstract:研究了射頻反應(yīng)濺射三元化合物CdIn2O4薄膜的電學和光學性質(zhì)，討論了反應(yīng)氣體中氧氣濃度和熱處理對CdIn2O4薄膜紅外反射率的影響，實驗結(jié)果表明，CdIn2O4薄膜在紅外區(qū)域具有很高的反射率，是一種極好的紅外反射膜。用它用為冰箱內(nèi)保溫膜和室內(nèi)及冷庫保溫窗玻璃，效果十分明顯，是一種極好的保溫和節(jié)能膜。

Abstract:介紹了扇形軋輥步進軋機的工作原理，СШ－175M，ПК－600，СШС－750等型號步進軋機各工作部件的功能、技術(shù)特性及使用特點。