摘要:
The present invention provides a transmission medium for ultrasonic diagnosis which comprises a hydrocarbon compound, and/or an ether or ester compound each having a cyclic structure, and has a viscosity of at least 1000 mPa·s at a working temperature. The transmission medium for ultrasonic diagnosis according to the present invention is free from hygroscopicity causing rust generation in a test specimen and worsening the transmission characteristics during use, can impart adhesiveness to a solid within a short period of time, and is particularly excellent in transverse ultrasonic wave transmission, even in a non-contact state in which the test specimen is immersed.
摘要:
Provided is a method of ultrasound diagnosis, wherein the method includes: coating a surface of a specimen with a transmission medium; and performing the ultrasound diagnosis, wherein the transmission medium has a viscosity of at least 1,000 mPa·s at 25° C. and contains a hydrocarbon compound.
摘要:
There are disclosed a plastic processing method of the pressure of pressureless sintered ceramic body composed of at least one aluminum-containing compound selected from the group consisting of aluminum oxide, aluminum nitride and aluminum oxynitride and at least one hard compound selected from the group consisting of carbides, nitrides and oxides of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten and silicon and mutual solid solutions thereof, the content of said at least one aluminum-containing compound is 5 to 95% by volume, comprising subjecting the ceramic body to plastic deformation at a temperature of 1300.degree. C. or higher, under a stress of 15 kg/mm.sup.2 or smaller and at a strain rate of 10.sup.-3 /sec or less in a reducing atmosphere or in vacuum, and a ceramics-made molded material comprising a composite ceramic body composed of the same as mentioned above.
摘要翻译:公开了由至少一种选自氧化铝,氮化铝和氮氧化铝的至少一种含铝化合物和至少一种选自以下的硬化合物组成的无压烧结陶瓷体的压力的塑性加工方法: 钛,锆,铪,钒,铌,钽,铬,钼,钨和硅及其相互固溶体的碳化物,氮化物和氧化物,所述至少一种含铝化合物的含量为5〜95体积% 包括在还原气氛或真空中,在15℃/ mm 2以下的应力和10 -3 /秒以下的应变速率下,使陶瓷体在1300℃以上的温度下进行塑性变形, 以及包含与上述相同的复合陶瓷体的陶瓷成型体。
摘要:
There is disclosed a sintered alloy for decoration comprising2 to 30% by weight of a binding phase comprising one or more elements selected from the group consisting of Fe, Ni, Co, Cr, Mo and W;0 to 10% by weight of a strengthening phase comprising one or more material selected from the group consisting of a metal, an alloy, a metal oxide, a metal nitride and a metal carbide;the balance of a hard phase represented by the formula:(Tia, Mb) (Nw, Cx, Oy)z(wherein M, A, b, w, x, y and z are defined in the specification); andinevitable impurities.The sintered alloy for decoration according to this invention possesses both a decorativeness suitable for decorative members as well as excellent corrosion resistance and mechanical properties.
摘要:
There is disclosed a silicon nitride body consisting essentially of(A) 0.5 to 25% by weight of at least one of oxides, nitrides and oxynitrides of rare earth elements consisting of Sc, Y and lanthanide elements;(B) 0.5 to 25% by weight of at least one of the nitrides and oxynitrides of elements consisting of Be, Mg, Ca, Sr, Ba and Ra in group IIa and/or of nitrides and oxynitrides of elements consisting of B, Al, Ga, In and Tl in group IIIb of the periodic table; and(C) a remainder including Si.sub.3 N.sub.4 and inevitable impurities.The silicon nitride sintered body of this invention has excellent wear resistance and toughness, and is suitable for an industrial production of materials for heat resistant structures.
摘要翻译:公开了一种氮化硅体,其主要由(A)0.5〜25重量%的由Sc,Y和镧系元素组成的稀土元素的氧化物,氮化物和氮氧化物中的至少一种组成; (B)IIa中由Be,Mg,Ca,Sr,Ba和Ra组成的元素的氮化物和氮氧化物中的至少一种为0.5〜25重量%,和/或由B,Al组成的元素的氮化物和氮氧化物中的至少一种 ,元素周期表IIIb族中的Ga,In和Tl; 和(C)余量包括Si 3 N 4和不可避免的杂质。 本发明的氮化硅烧结体具有优异的耐磨性和韧性,适用于耐热结构材料的工业化生产。