摘要:
A zirconia-base sintered body comprising a sintered substrate containing 30% by volume or more of tetragonal zirconia and a coating film disposed thereon, characterized in that the diffusion coefficient of oxygen in a material forming said coating film at no higher than 550.degree. C. is smaller than that of oxygen in said tetragonal zirconia at a temperature of no higher than said temperature.
摘要:
A silicon nitride sintered product comprises, in % by weight, 1 to 10% Mg, calculated as MgO, 1 to 10% Zr, calculated as ZrO.sub.2, 0.1 to 2.0% of at least one of Al, calculated as Al.sub.2 O.sub.3, Li, calculated as Li.sub.2 O, and Na, calculated as Na.sub.2 O, and the remainder being Si.sub.3 N.sub.4 and unavoidable impurities.
摘要:
A method for manufacture of a high toughness sintered body, characterized by sintering a shaped body of a mixed powder consisting essentially of from 40 to 70% by weight of a first component of powdered ZrO.sub.2 containing at least one stabilizer selected from the group consisting of Y.sub.2 O.sub.3, CaO, and MgO and having an average particle diameter of not more than 1.mu. and from 30 to 60% by weight of a second component of powdered .alpha.-Al.sub.2 O.sub.3 having an average particle diameter of not more than 1 .mu.m, which mixed powder may also contain not more than 3% by weight of SiO.sub.2, not more than 0.5% by weight of Fe.sub.2 O.sub.3, or not more than 0.5% by weight of TiO.sub.2 in a combined proportion of not more than 3% by weight at a temperature in the range of from 1400.degree. C. to 1600.degree. C. under normal pressure thereby producing a sintered body wherein at least 90% by weight of ZrO.sub.2 particles present therein are accounted for by tetragonal and cubic crystals, the ratio of said tetragonal crystals to said cubic crystals is at least 1:3, and the average crystal particle diameter of the entire sintered body is at least 3.mu..
摘要翻译:一种制造高韧性烧结体的方法,其特征在于,烧结混合粉末的成形体,所述混合粉末主要由40至70重量%的含有至少一种选自Y 2 O 3的稳定剂的粉末状ZrO 2的第一组分组成, CaO,MgO,平均粒径为1μm以下,平均粒径为1μm以下的粉末状α-Al2O3粉末的第二成分的平均粒径为1〜30重量%,混合粉末 还可以含有不超过3重量%的SiO 2,不超过0.5重量%的Fe 2 O 3,或不超过0.5重量%的TiO 2,其组合比例不超过3重量% 范围在常压下为1400℃至1600℃,从而生产烧结体,其中存在至少90重量%的存在于其中的ZrO 2颗粒为四方晶体和立方晶体,所述四方晶体与所述立方晶体的比率 结晶 Als至少为1:3,整个烧结体的平均晶粒直径至少为3微米。
摘要:
Sintered cubic boron nitride consisting of 80 to 20% by volume of the following component (a), with the balance being essentially the following component (b), and a process for producing such nitride are disclosed:(a) cubic boron nitride;(b) a cermet containing the following sub-components (1), (2) and (3):(1) TiC and/or TiC-TiN, part of which may be replaced by a carbide, a nitride, a boride and/or a silicide of a transition metal of the group IVa, Va and VIa of the Periodic Table;(2) Fe, Co and/or Ni; and(3) Mo and/or Mo.sub.2 C.
摘要:
A data processing device for memory dump collection, the data processing device includes: a processor to issue a first interrupt upon instructions to collect a memory dump being entered, to issue a second interrupt for running a program put in an address indicated by a reset vector upon the first interrupt being issued, and to record the memory dump in a storage unit in a process of running the program upon the second interrupt being issued.
摘要:
A method for forming a coated film comprising the steps of sequentially applying an intermediate coating material, a base coating material and a clear coating material on a substrate on which an electrodeposition coated film has been formed; and simultaneously curing the applied three layers by baking, wherein the intermediate coating material comprises: (a) 40 to 56% by weight of an urethane modified polyester resin, the urethane modified polyester resin being obtainable by polyaddition of: a hydroxyl group containing polyester resin which is obtainable by polycondensation of an acid ingredient including not less than 80% by mole of isophthalic acid with a polyhydric alcohol ingredient, with an aliphatic diisocyanate compound; (b) 10 to 30% by weight of a melamine resin; (c) 15 to 30% by weight of a blocked isocyanate compound; (d) 4 to 15% by weight of a nonaqueous dispersion resin having core-shell structure; and (e) 0.4 to 2 parts by weight of a flake-like pigment. The resulting layered coated film is superior in aesthetic appearance and chipping resistance even formed in the three-coating and one-baking method.
摘要:
An assembly process apparatus includes an assembly robot for assembling parts to a workpiece which is a main body, a part supply apparatus for supplying parts to the workpiece, a work pallet for supplying workpieces to an assembly station of the assembly robot, and a tool pallet for supplying assembly process modules interchangeable with respect to the assembly robot. The part supply apparatus is made up of a plurality of part supply modules interchangeable with respect to the assembly robot. With the assembly process apparatus as one unit, it is constructed to assemble parts one unit only or with a plurality of units combined. Accordingly, an assembly process apparatus achieves excellent productivity with which it is possible to expand or cut line equipments easily according to production volume, and it is possible to achieve utilization of surplus assembly robots.
摘要:
A ceramic cutting tool of a TiC-based sintered body containing 40 wt % or more of TiC, and 5 to 40 wt % of SiC whisker uniformly dispersed in the sintered body, said SiC whisker having a diameter of 0.2-1.5 .mu.m and a length of 1-20 .mu.m. The sintered body may include up to 40 wt % of Al.sub.2 O.sub.3, and may further contain sintering aid.Up to 40% by weight of TiC may be substituted with at least one of Ti, nitrides, oxides and borides of Ti, and solid-solution of said nitrides, oxides and borides of Ti to form a TiC-base composition.The TiC-base composition may be represented by (Ti.sub.a M.sub.b) (C.sub.c N.sub.d O.sub.e B.sub.f).sub.g where: M denotes at least one of transition metal elements of Groups IVa, Va and VIa, except Ti, according to the International Periodic Table; and a+b=1, 0
摘要翻译:包含均匀分散在烧结体中的TiC为40重量%以上且5〜40重量%的SiC晶须的TiC系烧结体的陶瓷切削工具,所述SiC晶须直径为0.2〜1.5μm, 长度1-20亩。 该烧结体可以包含至多40重量%的Al 2 O 3,并且还可以含有烧结助剂。 高达40重量%的TiC可以被Ti的Ti,氮化物,氧化物和硼化物中的至少一种以及Ti的所述氮化物,氧化物和硼化物的固溶体代替,以形成TiC基组合物。 TiC基组合物可以由(TiaMb)(CcNdOeBf)g表示,其中:M表示除了Ti以外的IVa,Va和VIa族中的至少一种过渡金属元素,根据国际周期表; 和a + b = 1,0,0
摘要:
A ceramic cutting tool formed of a TiC-based sintered body contains 40 wt % or more of TiC, and 5 to 40 wt % of SiC whisker uniformly dispersed in the sintered body. The SiC whisker has a diameter of 0.2-1.5 .mu.m and a length of 1-20 .mu.m. The sintered body may contain up to 40 wt % of Al.sub.2 O.sub.3, and further sintering aids. Up to 40% by weight of the TiC may be substituted with at least one of Ti, nitrides, oxides and borides of Ti, and solid-solutions of these nitrides, oxides and borides of Ti to form a TiC-base composition. The TiC base composition may be represented by the formula (Ti.sub.a M.sub.b) (C.sub.c N.sub.d O.sub.e B.sub.f).sub.g, in which M denotes at least one transition metal element of Groups IVa, Va and VIa according to the International Periodic Table, except Ti; and a+b=1, 0
摘要翻译:由TiC系烧结体形成的陶瓷切削工具包含40重量%以上的TiC和5〜40重量%的均匀分散在烧结体中的SiC晶须。 SiC晶须的直径为0.2-1.5μm,长度为1-20μm。 该烧结体可含有至多40重量%的Al 2 O 3,以及其它烧结助剂。 高达40重量%的TiC可以被Ti的Ti,氮化物,氧化物和硼化物中的至少一种,Ti的这些氮化物,氧化物和硼化物的固溶体代替,以形成TiC基组合物。 TiC基础组合物可以由式(TiaMb)(CcNdOeBf)g表示,其中M表示除了Ti之外,根据国际周期表的至少一种IVa,Va和VIa族的过渡金属元素; 和a + b = 1,0,0
摘要:
A diamond-coated body is prepared by coating a diamond film on the surface of a sintered body by means of vapor phase synthesis, the sintered body being so prepared by subjecting a sintered body prepared from ceramics based on silicon nitride to heat treatment at the temperature of 1,400.degree. C. to 1,700.degree. C. as to give a crystalline intergranular phase. The resulting diamond-coated body has excellent adhesion between the diamond film and the substrate and it is appropriately employed for cutting tools and so on because, when applied to the cutting tools, they can be used for cutting for a long period of time.