Plasma Jet formation of chromium oxide layer is enduring, has the extremely high hardness and density.
等离子喷射形成的氧化铬层非常坚固耐久，具有极高的硬度和密度。
Diastereoisomer of goniotriol was synthesized, using ciunamic aldehyde as starting materials, through nucleophilic addition of 2-furyllithium to carbonyl, epoxidation of allyl alcohol with m-chloroperbenzoic acid, ring transformation of 2- furylcarbinol with N-bromosuccinimide, oxidation of hemiacetate with chromium oxide in acitic acid and immediately selective reduction of α, β-unsaturated keto carbonyl with freshly prepared triacetoxyborohydride sodium.
以桂皮醛为原料，经过与2-呋喃基锂的加成、间氯过氧化苯甲酸对烯丙醇双键的环氧化、N-溴代丁二酰亚胺的对α-呋喃醇的氧化扩环生成吡喃酮、三氧化铬／乙酸对半缩醛羟基的氧化和三乙酰硼氢化钠对α，β-不饱和酮羰基的选择性还原合成了天然产物哥纳香三醇的非对映异构体从而找到了一条合成苯乙烯δ-内酯类化合物的简便易行的方法。
I plant of the chromium oxide, alumina ceramic coating and has a tungsten carbide metal-resistant coating wear, corrosion resistance, high temperature, and other fine performance.
我厂所制备的氧化铬、氧化铝陶瓷涂层和碳化钨金属涂层有着耐磨损、耐腐蚀、耐高温等优良性能。
The corrosion product on the surface of 1N-939 alloys is found to be composed of chromium oxide and sulphide.
腐蚀层下没有贫铬现象，而出现贫钛区与沿晶界的内氧化物以及钇与钛的硫氧化物的分散质点。
It is in orange color with the contents of chromium and iron oxide, in green color with the contents of iron and titanium oxide, in purple color with the contents of titanium and iron oxide.
含氧化铬呈红色，含钛和氧化铁呈蓝色，含氧化铁呈黄色，含铬和氧化铁呈橙色，含铁和氧化钛呈绿色，含铬、钛和氧化铁呈紫色。
Chemical Products (various types of chromium saltsì·; chromium anhydride; sodium sulfide; sulfur; Strontium; barium carbonate; quicklime; chromium oxide green; red potassium alum; chromium oxides; Barium oxides; other oxides
公司在全体员工的共同努力下，从小到大，已开发出了多种系列产品，如：硫化碱、氧化铬绿、碳酸钡、碳酸锶、氯化钡、沉淀硫酸钡、硫磺、生石灰等。
Some soil chemical properties, as pH of soils, cation exchange capacity, calcium carbonate, ferriferous oxide and organic matter are studied. Chromium speciation is mainly affected by soil pH, CEC and calcium carbonate, but little by ferriferous oxide and organic matter.
所研究的土壤化学性质中，土壤pH值、阳离子交换量以及碳酸盐量对土壤铬形态分布及生物有效性影响较大，铁氧化物与有机质含量对土壤铬形态的分布及生物有效性有一定的影响。
Usually it turns into emerald at the time of chromium oxide or vanadium oxide, while aquamarine is formed due to the coloring of ferrous oxide, it becomes verobieffite due to the existence of magnesium, while heliodor is formed due to the coloring of iron oxide.
在存在氧化铬或氧化钒时通常就成了祖母绿，而海蓝宝石则是由于氧化亚铁着色而成的。成为铯绿柱石是由于镁的存在，而金绿柱石则是因氧化铁着色而成的。
The results of catalytic performance showed that chromium oxide has certain ammonia decomposition activity.
不同的表面活性剂所得的纳米介孔氧化铬材料的结构和性能差异较大。
I plant perennial supply of chemical plating material: nickel sulphate, chloride nickel, nickel nitrate, ammonium chloride, sodium hypophosphite, sodium citrate, ammonium citrate, potassium citrate, chromium oxide, red Lead oxide, palladium chloride, SnCl2, crystal tin tetrachloride, the resistance of fuse, lithium fluoride, sulfuric acid cadmium, Na2HPO4, bismuth chloride, bismuth oxide, oxide Thallium sulfate Cobalt, cobalt nitrate, cobalt chloride, barium hydroxide, calcium hydroxide, fine chemical products.
我厂常年供应化学镀材料：硫酸镍、氯化镍、硝酸镍、氯化铵、次亚磷酸钠、柠檬酸三钠、柠檬酸三铵、柠檬酸钾、三氧化铬、红色氧化铅、氯化钯、氯化亚锡、结晶四氯化锡、电阻熔断剂、氟化锂、硫酸镉、磷酸氢二钠、氯化铋、三氧化二铋、三氧化二铊、硫酸钴、硝酸钴、氯化钴、氢氧化钡、氢氧化钙等精细化工产品。
In this case, the alkalized chromium oxide-aluminum oxide catalyst is set to have a grain size in the range of 1 mm through 4.5 mm.
在这种情况下，将碱化的三氧化二铬－氧化铝催化剂的粒度范围设定为1―4.5mm。
The main metallurgical characteristics of chrome is easy to rapidly oxidized to form a refractory oxide chromium oxide (Cr203), thereby increasing the possibility of weld metal inclusions.
铬的主要冶金特征是易于急剧氧化，形成难熔的氧化物三氧化二铬(Cr203)，从而增加了焊缝金属夹杂物的可能性。
Here we discuss the preparation method of green pearl pigment by de- positing chromium oxide on the micatitanium, and research the wrap- ping quantity of chromium, reaction tempture, calcining tempture, and so on which affect the quality of product.
本文对三氧化二铬包覆云母钛制得着绿色珠光颜料的制备方法进行了探讨，并对铬包覆量、反应温度，煅烧温度及方式等影响产品性能的因素进行了讨论
Using magnesite as main raw material, add in a small amount of Cr、Fe、Si oxide and silicate or phosphate binder, prepared separately the antioxidant ceramic coating for Hi-B grain-oriented and nickel or chromium-containing steel.
以工业镁砂为主要原料，添加少量铬、铁、硅氧化物，采用硅酸盐或磷酸盐作结合剂，分别制备Hi-B取向硅钢和镍铬低合金钢加热用防氧化陶瓷涂层。
2, 5 Dimethyl 2, 4 hexadiene has been synthesized by catalytic dehydration of 2, 5 dimethyl 2, 5 hexanediol with aluminium oxide, chromium oxide and phosphoric acid respectively. The mixed dienes have been isomerized by chromium oxide.
本文以2,5二甲基2,5已二醇为原料，分别用三氧化二铅、二氧化二铬和磷酸催化脱水合成2,5二甲基2,4己二烯，同时用三氧化二铬作催化剂对醇脱水生成的混合二烯烃进行了异构化。
Using colloid adsorption method, taking the ferrous oxide nanometer granule to load at the magnesium aluminium sharp crystal stone carrier, adding trace of interim metal oxide assistant, can make the NiO, V_2O_5 contained and loaded type super-fine iron base chromium free high temperature shift catalyst.
采用胶体吸附法，将氧化铁纳米颗粒负载于镁铝尖晶石载体上，加入少量过渡金属氧化物助剂，制成含NiO、V2O5负载型超细铁基无铬高变催化剂。
The results show that the impurity of ferrous oxide has almost no effect on the oxidation rate of the trivalent chromium.
结果表明：铬铁矿中杂质铁对Cr（Ⅲ）的氧化率无明显影响。
Corrosion Resistant Thin Film of Chromium-doped Aluminum Oxide Deposited by A Novel Spray Pyrolysis Method
喷雾热解法制备掺Cr的Al2O3薄膜及其抗腐蚀性能
Research on the Removal of Chromium (VI) in Wastewater by Using Iron Oxide Coated Granular Activated Carbon
载铁颗粒活性炭（IOCGAC）去除废水中Cr（VI）的研究
The outer layer consists of iron oxide and the inner layer chromium and iron oxide. The central point at hindering effect of the surface on the permeatin of hydrogen isotopes is the reduction of this oxide layer.
不锈钢表面对氢同位素透过的阻碍作用实质是该氧化层所发生的还原反应；其还原反应的程度主要依赖于与氢同位素作用的温度条件，并能够从功函数的变化中明显地反映出来。