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A nickel-based nano-WC/Co composite coating on 45 steel was gained with continuous wave CO_2 laser of 2.0 kW,the surface of which is smooth and fine without crack or pore and metallurgically bonds with matrix.

采用横流2.0 kW CO_2激光器,在45钢表面制备了表面较平整、较细密、基本消除了裂纹与孔隙并与基体呈冶金结合的镍基纳米WC/Co复合涂层。

The experimental results indicate that on the condition of Ni/C ,Zr added,the clad layers are metallurgically bonded to the substrate with fine shape and free of pores and cracks.

在楔横轧模具钢55Mn表面采用同轴送粉CO2激光熔覆WE—TiCp/镍基合金复合粉末,在增碳、锆条件下可获得成形好、无裂纹、与基体冶金结合的熔覆层。

Conductive electrodes can be deposited on metallic substrates by electrospark deposition process and a coating with excellent properties and metallurgically bonded with substrates can be produced to heighten the hardness and wear resistance of workpieces surfaces.

电火花沉积技术可以将电极材料沉积到金属基体表面,形成与基体冶金结合且具有优异性能的沉积层。用YG8电极棒为电极材料,进行了紫铜表面电火花沉积WC工艺试验研究,发现沉积效果在电压为60V、频率为200Hz、比沉积时间为2.8s/mm2时最好

The Electro-Spark Deposition process is a capacitor discharge, micro-arc welding process that utilizes short duration electrical pulses, discharged at controlled energy levels, to create a metallurgically bonded surface modification.

ESD 工艺是一种电容放电、微弧焊接工艺,利用短时电流脉冲,在可控能量范围内放电,以产生冶金结合的表面功能层。

The results indicate that the plasma clad cermet composite coating has a rapidly solidified fine microstructure consisting of7C3 primary particles uniformly distributed in the γ-Fe matrix and is metallurgically bonded to the Q235 steel substrate.

结果表明:涂层显微组织为7C3初生相均匀分布于γ-Fe基体上,具有快速凝固的特点,涂层与基材之间为完全冶金结合。

Ever since the first proposal of the presence of β\|Fe in 1885 by Osmond, a great debate on the cause of quench hardening of steels was going on until 1922 when Westgren and Phragmén disproved the presence of β\|Fe by high temperature X\|ray diffraction analysis.

自从Osmond在 1885年首次提出β Fe以为,直到 192 2年Westgren和Phragm啨n用高温X射线衍射证明β Fe与α Fe有相同的体心立方结构为止,在很长时间内,冶金学家一直为钢为什么在淬火后变硬而争论不休。

Company of imports and exports of classics plain star, pulverous metallurgy divides the joint efforts of factory and concerned place room, had protected qualitative, maintain a volume, finished export job on time.

经川星进出口公司、粉末冶金分厂和有关处室的共同努力,已经保质、保量、按时完成了出口任务。

According to introducing, the applied limits of gear mould can divide roughly for 3 respects: Plastic gear uses mould and bevel gear of forge of essence of life to use a pattern with gear of mould, pulverous metallurgy. Among them, the demand that plastic gear uses a pattern is bigger.

据介绍,齿轮模具的应用范围大致可分为三个方面:塑料齿轮用模具、粉末冶金齿轮用模具和精锻锥齿轮用模具。

The sheeted iron-based catalyst was made by powder metallurgy using pure form metallic powders as stuff.

以单质金属粉为原料,采用粉末冶金方法制备了片状铁基触媒,并借鉴目前金刚石工业中最为常用的粉末触媒组装方式及合成工艺在高温高压下进行了金刚石合成试验。

The influence of the carbon amount and sulphidation on the fricton and wear of iron-base materials was investigated.

在HDM-10型端面摩擦磨损试验机上分别进行恒定载荷与变动载荷摩擦磨损试验,考察了含碳量及硫化处理对铁基粉末冶金材料摩擦磨损性能的影响。

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随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

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不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

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关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。