查询词典 chromium iron

An ultra-high strength, weldable, low alloy steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone when welded, having a tensile strength greater than 830 MPa (120 ksi) and a micro-laminate microstructure comprising austenite film layers and fine-grained martensite/lower bainite laths, is prepared by heating a steel slab comprising iron and specified weight percentages of some or all of the additives carbon, manganese, nickel, nitrogen, copper, chromium, molybdenum, silicon, niobium, vanadium, titanium, aluminum, and boron; reducing the slab to form plate in one or more passes in a temperature range in which austenite recrystallizes; finish rolling the plate in one or more passes in a temperature range below the austenite recrystallization temperature and above the Ar3 transformation temperature; quenching the finish rolled plate to a suitable Quench Stop Temperature; stopping the quenching; and either, for a period of time, holding the plate substantially isothermally at the QST or slow-cooling the plate before air cooling, or simply air cooling the plate to ambient temperature.

在基体板以及焊接时的热影响区处的低温韧性优异的超高强度、可焊接、低合金钢具有高于830MPa（120ksi）的抗拉强度，并且具有包含奥氏体薄膜层和细晶粒的马氏体／下贝氏体板条的显微层状组织，所述钢的制备过程为：加热含有铁以及特定重量百分比的添加元素的钢坯，所述添加元素为碳，锰，镍，氮，铜，铬，钼，硅，铌，钒，钛，铝，以及硼中的一些或全部；在奥氏体可发生再结晶的温度范围内，采用一个或多个道次，将所述钢坯轧制成板材；在低于奥氏体再结晶温度但高于Ar 3 转变点的温度下，采用一个或多个道次对所述板材进行终轧；将所述终轧板材淬火至一适当淬火终止温度；停止所述淬火；或者在空冷前在QST点基本等温保持所述板材一段时间，或者对所述板材进行缓慢冷却，或者只是简单地将所述板材空冷至室温。

TANG Zi-long SONG Shi-zhe (Department of Materials, Tianjin University, Tianjin 300072)GUO Ying-kai (Tianjin Professional College, Tianjin 300402)Abstract : The corrosion behavior of type 304 stainless steel and industrially pure iron, chromium, nickel in 1.0mol/L HC1 and their corrosion inhibition by piperidine were investigated by atomic absorption spectrometry, current vs time relation at constant potential and polarization curve measurements.

采用原子吸收光谱，恒电位下电流～时间关系和极化曲线测试等方法研究了304不锈钢、纯铁、铬和镍四种材料在0.1mol/L HCl中的腐蚀行为及哌啶的缓蚀作用。

The color in the gem varieties of spodumene is due to impurities of iron (producing yellow to green colored spodumene), chromium (producing medium-deep green colored spodumene) or manganese (producing pink to lilac spodumene), all substituting for aluminum in the crystal structure.

宝石级锂辉石，其颜色主要是因为含有内含物，如铁可以产生黄色到绿色锂辉石，铬可以产生中等深绿色的锂辉石，而锰则可产生粉红到丁香紫的锂辉石，而在晶体结构上部分被铝取代。

Iron oxides, chromium oxide green, ultramarine blue, nickel-titan yellow, dolomite, chalk

氧化铁，氧化铬绿，深蓝色，镍钛黄，白云石色，粉笔色

The catalyst for this reaction is iron chromium oxide with graphite as a binder.

进行这种反应的催化剂是以石墨为粘接剂的铁铬氧化物。

The reduction of the chromium oxide particles within the iron matrix is affected by factors that include the diffusion of the reduced chromiu....

铬主要以两种价态稳定的存在於自然界中，分别是三价铬以及六价铬，六价铬被认为是具有较强的生物毒性。

High chromium cast iron with pre-buried steel bar net is safe and reliable in use.

加钢筋网高铬铸铁件使用安全可靠，使用寿命是高锰钢的1.6倍以上。

The cast steel and high chromium cast iron were used respectively as handle and head of the hammer.

分别采用高铬铸铁和碳素钢作为锤端和锤柄。

Wear tests of 45 steel and high chromium cast iron were carry out by self-made simulating sand slurry wear test machine.

在自制的模拟疏浚工况的立式泥沙磨损试验机上，对 4 5钢和含碳量分别为 2 %和 3%的高铬铸铁进行了泥沙磨损试验。

The composition, heat treatment process, structure and properties of a low-chromium cast iron ball which is suitable for large scale ball mill of copper ore processing were studied.

探索了适应于铜矿大型球磨机的低铬铸铁磨球成分、热处理工艺及组织性能，获得了一种贝氏体+马氏体组织的低铬铸铁及其强韧性处理的工艺。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。