查询词典 chromium alloy

The weight percentage for the components of the hyaline coating is as follows: SiO2 45 to 54 percent, B2O3 15 to 20 percent, one or more of Na2O, K2O and Li2O, 10 to 24 percent, one or more of TiO2, ZrO2 and ZnO, 6 to 18 percent , and the rest is one or more of CaO, MgO and CeO2. Firstly, the glass powder is mixed with the mill additions to be pulped and then plated on the surface of titanium or the titanium alloy. After being dried, the surface of titanium or the titanium alloy is directly used for a thermal hydrogen treatment or smelted at a temperature of 900 to 1, 000 DEG C for 15 to 30 minutes and then a hyaline coating with a thickness of 20 to 70 micrometers is formed on the surface of titanium or the titanium alloy; secondly, titanium or the titanium alloy plated with the coating is conducted a thermal hydrogen treatment. After the treatment technique is finished, the coating flakes off automatically in the process of cooling; and finally, a surface treatment is supplemented to meet the requirement of the workpiece surface.

该玻璃质涂层成分按重量百分比：45-54SiO2，15-20B2O3，10-24Na2O、K2O、Li2O中的一种或多种，6-18TiO2、ZrO2、ZnO中的一种或多种，余量CaO、MgO、CeO2一种或多种，将玻璃粉与磨加物混合制浆并涂覆在钛或钛合金表面，干燥后直接用于热氢处理，或在900-1000℃下熔烧15-30min，在钛或钛合金表面制得20-70微米玻璃质涂层，随后将制有该涂层的钛或钛合金置于氢气气氛下进行热氢处理，处理工艺结束后，涂层在冷却过程中自剥落，最后辅以表面处理即可满足工件表面要求。

By testing the mechanic and electrochemical properties of lead and lead alloy,concluded that Pb Ca alloy have higher hardness and corrosion resistance,while Pb Sb alloy have better cycle charge discharge r property than Pb Ca alloy.

通过对铅及其铅基合金的机械性能和电化学性能的测试可得，Pb－Ca系合金具有较高的硬度和较优良的耐腐蚀性能，而Pb－Sb合金的循环充放性能优于Pb－Ca合金。

By the OM and SEM observation of solidification microstructure, the interfacial reaction between TiAl alloy and Al2O3 crucible was serious, and a large number of α-Al2O3 inclusion formed in the solidification microstructure. The interfacial reaction between TiAl alloy and ZrO2 crucible occurred only on the sample surface, but the crucible was not stable at high temperature and a tack coating was formed, clinging tightly with TiAl alloy. C element in the graphite crucible changed the original solidification path of TiAl alloy, and club-shaped γ-TiAl phases formed.

通过用光学显微镜和扫描电镜对凝固组织观察发现，TiAl合金与氧化铝坩埚之间的界面反应较为严重，在凝固组织中形成了大量氧化铝夹杂；TiAl合金与氧化锆坩埚的界面反应仅发生在试样表面，但该坩埚在高温下不稳定，并在试棒表面形成一层无法剥离的粘结层；石墨坩埚中的C元素改变了原有TiAl合金的凝固路径，生成了棒状的γ-TiAl相。

Carbide in the process of grinding, the powder will produce some waste, recycling all kinds of high-priced steel scrap tungsten carbide tool steel and tungsten, tungsten alloy Trim, grinding material, PCB waste bit, tungsten steel tool, used powder tungsten, tungsten steel powder, tungsten steel scrap, carbide grinding materials, including waste tungsten alloy grinding expected, the film cutter, drill, milling cutter , NC knives, cutting-tungsten steel mold, drawing die, a round cutter, saw, anvil, PCB bit, V-CUT knives, gongs, knives, a high proportion of alloy, non-magnetic alloy, tungsten steel powder, tungsten wire cutter Tungsten steel waste, and other tools.

硬质合金在打磨的过程中，会产生一些粉末废料，高价回收各种硬质合金钨钢报废工具以及钨钢、钨合金边角料、磨削料、废PCB钻头、钨钢工具、废钨粉、钨钢粉末、钨钢废料、硬质合金磨削料、含钨废料、合金磨削料、铣刀片、钻头、立铣刀、数控刀具、线切割钨钢模具、拉丝模具、圆切刀、锯片、顶锤、PCB钻头、V-CUT刀、锣刀、高比重合金、无磁合金、钨钢粉末、钨绞丝等各种钨钢废工具。

Objective To compare the clinical effect of the Ni-Cr alloy,Gold-plating Ni-Cr alloy,Titanium alloy and Au-Pd alloy coping of the porcelain-fused-to-metal.

目的 评价镍铬合金、镀金镍铬合金、钛合金、金钯合金4种金属烤瓷冠的临床应用效果。

Objective: 1.To study the effect of surface treatment such as titanium nitrogen coating and gold-plating on corrosion resistant of Ni-Cr alloy and Ni-Cr Alloy With Titanium. 2. to evaluate the difference in corrosion resistance between Ni-Cr Alloy and Ni-Cr Alloy with Titanium .

目的：探讨表面处理对镍铬合金、含钛镍铬合金(Titan含钛牙科合金)耐腐蚀性的作用以及Ni-Cr合金与含Ti的Ni-Cr合金的耐腐蚀性有无差别。

2Titanium cobalt the metal alloy roast porcelain hat, gold leaf metal alloy to roast porcelain hat and gold deposition to roast a porcelain hat:Match to be called precious metal to roast a porcelain hat, inside the hat for the titanium cobalt metal alloy, gold leaf metal alloy and 99.99%ly electroplate pure gold respectively, they all belong to sloth metal and cause several rates of allergy smaller, and the physics and chemistry function is settled.

钛钴合金烤瓷冠、金铂合金烤瓷冠以及金沉积烤瓷冠：合称为贵金属烤瓷冠，内冠分别为钛钴合金、金铂合金、99.99%的电镀纯金，它们均属于惰性金属，导致过敏的几率较小，理化性能很稳定。

Plant exports most of the mechanical parts, products, weight 60-2250 g range, self-shot blasting and abrasive surface treatment. Factory collection of gold ingredients, smelting, casting, permanent mold casting, shot blasting, processing in one, can provide customers with different national standard grades of aluminum alloy, wear-resistant alloy, zinc alloy castings, also in accordance with specific circumstances, the preparation of special constituents of alloy materials of new technologies, new processes, new materials research and applications to meet customer performance accessories have certain special requirements.

本厂集合金配料，冶炼，压铸，永久模浇铸，抛丸，加工于一体，可为客户提供不同国家标准牌号的铝合金，耐磨合金，锌合金铸件，亦可根据具体情况，配制特殊成分的合金材料进行新技术，新工艺，新材料的研究与应用，以满足客户对配件某方面性能有特殊要求。

In order to disclosure the reason why the electrocatalysis activeness and selectivity droped after being used several hundred hours continuously, the x-ray diffraction, scanning electron microscopy and energy dispersive spectroscope have been used to characterize the surface condition variations of Monel metal. The results indicated: Monel metal belongs to the Cu-Ni alloy around the electrolysis experiment.And after being used for 600hr, the surface layer element composition and geometry distribution of the alloy changed, namely in the alloy the Cu element /which superficial free enthalpy was smaller,"concentrated" to the alloy surface,and formed one kind of marble structure microcrystallite.Thus the electrode surface becamed rough a

为了揭示蒙乃尔合金阴极在连续使用数百个小时后电催化活性剂选择性下降的原因，采用X射线衍射仪、电子扫描电镜和电子能谱分析仪对电解实验所用的蒙乃尔阴极材料在电解实验前后的表面状态进行了表征，结果表明：所使用的蒙乃尔合金阴极材料在电解实验前后均属于Cu-Ni合金，使用600hr后，由于表面层元素组成和几何排布发生了变化，即合金中表面自由焓较小的Cu元素向合金表面&富集&，形成一种大理石结构的微晶，表面粗糙、不均一，这是造成其对硝基苯电还原的催化活性及选择性随着使用时间延长而逐渐下降的主要原因，同时也为此类电极的修饰改进提供了方向。

Alloy 20cb-3-- This alloy has higher amounts of nickel and chromium than 300 series stainless steel and with the addition of columbium.

合金20Cb-3--与300系列不锈钢相比，这种合金的镍和铬含量更高，此外，还增加了钶元素。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。