WC—Co硬质合金的γ相成分

依据ＷＣ－Ｃｏ硬质合金各相含量间的关系，推求出两相（ＷＣ＋γ）合金中γ相成分极限和碳含量宽度。结果表明，对于两相ＷＣ－Ｗｏ合金，其γ相成分（钨和碳在γ相中的固溶度ＸＷ和ＸＣ）与合金钴配量和碳含量有关且存在关系：ｘｗ＝１３７９ｘｃ＋１．４７－３７．１ｘｃ，但其两相区上下限γ相成分与合金钴配量无关，分别为ｘｗ：０．０７５２和０．２３４，ｘｃ：０．００４９１和０．００２４８（Ｗｔ）：ＷＣ－Ｃｏ合金两相区上下限碳含量和γ相含量（ｗｔ．）与合金钴配量有关，其两相区的碳含量宽度与合金钴配量有正变关系。对上述结果进行了实验验证。     

硬质合金K_（IC）的非破坏性鉴定

随合金标称Ｃｏ含量（Ｗｔ．％）改变所引起的γ相平均自由程λ的变化所建立的两相高碳ＷＣ－Ｃｏ硬质合金中比矫顽磁力Ｈｓｃ同断裂韧性Ｋ＿（ＩＣ）间的关系具有反向相关的线性规律：Ｋ＿（ＩＣ）＝３１．３１一２７．１Ｈ＿（ＳＣ）；γ相成分对ＷＣ－Ｃｏ合金Ｈ＿（ＳＣ）和Ｋ＿（ＩＣ）影响的一致往，在γ相成分相同的前提下，根据上述关系用Ｈ＿（ＳＣ）对ＷＣ－Ｃｏ台台的Ｋ＿（ＩＣ）进行间接的非破坏性鉴定是可行的。     

高铅掺氟Bi系超导体的研制

本文首次报道了五种高铅量Ｂｉ系超导体Ｂｉ２－ｎＰｂｎＳｒ２Ｃａ２Ｃｕ３Ｏｙ－ｘＦｘ（ｎ＝１．０，１．２，１．４，１．６，１．７）的制备，ｘ在１．０－１．４范围内，ｎ依次取上述值时，超导体的Ｔｃｏ分别为１１３．６Ｋ，１１２Ｋ，１０４Ｋ，８８Ｋ，７８Ｋ。Ｘ射线粉末衍射，红外光谱等分析表明，ｎ＝１．０－１．４时超导体仍２２２３相结构特征；ｎ＝１．６，１．７时表现出新的结构特点，此外从化学动力学观点初步探     

WC－Co硬质合金中η_1相和碳含量的磁性测定原理

根据三相ＷＣ－Ｃｏ硬质合金中η＿１相和碳含量的求值公式和影响比饱和磁化强度４πσ的诸因素论述了用４πσ测定三相ＷＣ－Ｃｏ硬质合金中η＿１相和碳含量的原理。结果表明，用滋性方法测定ＷＣ－Ｃｏ合金的η＿１相和碳含量是精确的非破坏性检验方法，对于η＿１相和碳含量的测定精度分别为千分之三和万分之一。     

铬的交流示波极谱滴定

提出了在ＰＨ５的ＨＡｃ－ＮａＡｃ＋ＫＢｒ体系中，加入过量的ＥＤＴＡ溶液与Ｃｒ络合，过剩的ＥＤＴＡ用０．０２ｍｏｌ／Ｌ的ＣｕＳＯ４标准溶液加滴，以Ｃｕ＾２＋在交流示波极谱ｄＥ／ｄｔ－Ｅ曲线上出现切口直接指示滴定测定铬的方法。铬量分析范围为０．８０－１８．００ｍｇ。回收率为９８．８５％－１００．４７％。对于含铬０．ＸＸ％－ＸＸ．ＸＸ％的试样，分析１０次的相对标准偏差为０．２８－１．１２％。     

稀土优化WC—Co硬质合金强韧性机理

探讨了稀土强化ＷＣ－Ｃｏ硬质合金的机理。结果表明，适量添加稀土氧化物或混合稀土氧化物均能有效提高ＷＣ－Ｃｏ硬质合金的强韧性；稀土能明显提高ＷＣ－Ｃｏ合金制品的表面宏观压应力：鉴于未加稀土的普通ＷＣ－Ｃｏ合金室温下ｈｃｐ型γ相的固有比例通常就很少，加稀土阻止γ相的ｆｃｃ→ｈｃｐ相变对合金强韧性的优化作用甚微；稀土氧化物对ＷＣ－８Ｃｏ硬质合金显微结构无明显影响，也不引起钨溶质对γ相的附加固溶强化效果。     

对《讨论正逆断层形成的力学模型》的说明修改

由原文（１９９９年３期《河北煤炭》）分析知：正断层０≤Ｆ２－Ｆ１＜－２ｆＦＨ时０°＜α＜９０°;逆断层－２ＦＨｆ＜Ｆ２－Ｆ１≤０时０°＜α＜９０°。正断层上盘,除Ｆ２－Ｆ１外;上盘沿斜面下滑,故杆模型沿水平受剪切应力τ′作用。很多情形（层位软弱）时,τ′＞｜Ｆ／２｜。此时忽略Ｆ,有：τ＝（σ１ｃｔｇαｓｉｎα＋τ′ｃｔｇα·ｃｏｓα－σ２ｃｏｓα－τ′ｓｉｎα）／（１／ｓｉｎα）;σ＝（σ１ｃｔｇαｃｏｓα＋σ２ｓｉｎα－τ′ｃｔｇαｓｉｎα－τ′ｃｏｓα）／（１／ｓｉｎα）∴［σ－（σ１＋σ２…     

预变形对含Sc铝锂合金拉伸性能和显微组织的影响

研究了Ａｌ－１．４２Ｌｉ－２．４１Ｃｕ－０．９３Ｍｇ－０．０７３Ｚｒ－０．１７Ｓｃ（ｗｔ％）合金在１６０℃和预变形（１７％）＋１６０℃不同时效时间下的室温拉伸性能。利用透射电（ＴＥＭ）观察了合金的显微组织。结果表明：该合金具有较好的室温室性能，合金主要强化相为δ＇（Ａｌ３Ｌｉ）和δ＇／β复合相。由于合金中同时加入Ｓｃ，Ｚｒ，尤其是添加了０．１７ｗｔ％Ｓｃ导致大量的复合相出现（复合相粒径为２４～３２     

ZrCr_（2－x）Fe_x合金表面性质及中毒研究

利用ＸＰＳ研究了ＺｒＣｒ＿（２－ｘ）Ｆｅ＿ｘ（ｘ＝１．２，１．４，１．６）的表面组分及化学态，结果表明Ｚｒ在表面偏析，以ＺｒＯ＿２形式存在，而Ｆｅ和Ｃｒ以金属态存在于次表示。用１０１．３５ｋＰａ空气对ＺｒＣｒ＿（２－ｘ）Ｆｅ＿ｘ抗中毒性质进行了研究，发现抗中毒性质随铁含量的增加而增大，当时，抗中毒性质与此相反。     

析相分离—双波长光度法同时测定冶金废水中的镍和钴

研究了Ｎｉ￣（２＋）、Ｃｏ￣（２＋）在５－Ｂｒ－ＰＡＤＡＰ－ＴｒｉｔｏｎＸ－１００体系中的析相显色反应，利用该体系具有良好的选择和富集、分离特点，在９０℃析相１ｈ，选用双波长ｋ系数法，根据公式在一个测定波长和参比波长下，测定混合双组分吸光度，从而求得各待测组分含量。本法用于测定冶金废水中０．１～４ｍｇ／ｍＬ的镍和钴取得了满意结果。     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered