Results indicated that the corrosion belonged in cathodic oxygen depolarization corrosion ,just like that of carbon steel-stainless steel couple .

結(jié)果表明亚洲人成在线观看网站不卡，該腐蝕屬陰極氧去極化型腐蝕亚洲网络在线，與不銹鋼-碳鋼短路體系的腐蝕行為非常相似。

So, in order to settle the problem, a kind of process to acquire compare thick passivating film, high corrosion resisting WX-3TC trivalent chromium blue white desensitizer and its means were successful obtained. The white rust appears after 240h in salt spray test, thus the poor corrosion resistance of blue white passivating film can be settled.

為此亚洲综合在线视频小说，在增加藍白色鈍化膜的厚度方面進行了努力欧美暴力性猛交黑人，終于研制成功了一種能獲得較厚99ri国产地址、具有高耐蝕性鈍化膜的WX-3TC三價鉻藍白色鈍化劑及其鈍化工藝，鹽霧試驗出現(xiàn)白銹的時間可達240h以上国产免费黄色网站无码，從而解決了藍白色鈍化膜耐腐蝕性差的難題18岁.com。

In this paper, the dezincification corrosion resistance of Mg-Sb brass was investigated by the methods of dezincification corrosion depth testing, optical microscope, SEM and XRD.

采用脫鋅腐蝕深度測量方法、光學顯微鏡亚洲女人天堂网2020、SEM和XRD等分析方法特黄特大性爱视频，研究了鎂銻黃銅的脫鋅腐蝕性能和添加少量Sn、Al元素對其耐腐蝕性能的影響操毛屄A片视频。

Based on the original production process, the developed corrosion inhibitor used for polyurethane foaming changes the pH of dialyzate, which is produced from submerging polyurethane foam to water, from acidity into faint alkalinity, so as to inhibit or retard corrosion of the pipeline.

研制成的聚氨酯泡沫用緩蝕劑亚洲一级二级黄片a国，在不改變原有生產(chǎn)工藝及發(fā)泡參數(shù)的基礎上毛片大全視頻看看吧，將聚氨酯泡沫浸水析出液的pH值由酸性改變?yōu)槿鯄A性人人爽人人干人人操人人，從而達到抑制或延緩泡夾管腐蝕的目的；采用噴涂聚脈補口技術91精品国产肉丝高跟在线，有效地提高了現(xiàn)場補口的質(zhì)量中国黄色a片在线观看。

They had suppressed the cathodic process of carbon steel electrode. Their inhibition performance was also related with their molecule stereo conformation and electron configuration. Four of bis-(1, 1'-benzotriazoly)-α,β-diamide compounds linked via-CO 〓CO-chain were synthesized and certified by IR and 〓H-NMR. The minimum energy conformations of these compounds were obtained by MM2 forcefield program. The two benzotriazole moiety in BBT1 was more planar than in other compounds. This was beneficial in increasing the inhibition effects of BBT1. In 0.5M H〓SO〓 solution, BBT1 suppressed anodic corrosion reaction. In 3%NaCl solution, BBT1 suppressed both cathodic and anodic corrosion reactions. 1- [ (1'-imidazolly)-methyl] benzotriazole was synthesized by Mannich reaction.

合成了四個通過-CO〓CO-連接的雙（1，1'-苯并三唑）-αwww嗯啊，ω-二酰胺化合物黄色一区二区，采用MM2分子力學程序優(yōu)化了它們的分子結(jié)構，雙（1超爽超舒服黄色一级A片视频，1'-苯并三唑）-α114一级毛片免费，ω-二酰胺化合物的緩蝕作用與其分子內(nèi)兩個苯并三唑單元的空間取向有關系，良好的平面性有利于苯并三唑二聚體的吸附和緩蝕作用日韩在线观看自拍网址视频免费，苯并三唑二聚體BBT1分子內(nèi)兩個苯并三唑單元近似平行久久国产午夜一区二区福利，所以顯示出較好的緩蝕效果。0.5M硫酸中BBT1主要抑制銅的陽極溶解的電化學反應；3％NaCl溶液中性26uuuu欧美，BBT1對銅的陽極溶解和氧的陰極還原過程均有抑制作用爆草美女黄色视频，相比較而言對陰極過程的抑制作用更大一些。

The distribution of temperature stress was calculated by finite element analysis. The results showed when the surface temperature of concrete was higher than 110℃, the temperature stress was more than 4 MPa without regard to the creep. This might be lead to the damage of the surface of concrete. At the same time, a lot of microstructure analysiss such as XRD, SEM, IR, HSA etc. were done to analysis the difference of the component and microstructre of concrete before and after corrosion. The results indicated that the decomposion of CSH gel and calcium hydroxide and the creation of dilatability calcium oxide were the internal reason of the deterioration of concrete in the corrosion form of high heat.

該文通過有限元方法計算了由于溫度而產(chǎn)生的結(jié)構應力分布欧美色z，計算結(jié)果表明當混凝土表面溫度超過110℃時性生爱视频免费网站，如不考慮徐變時表層混凝土受到的溫度應力將超過4MPa，這使得表層混凝土很容易因溫度應力而破壞人人上人人操人人干；同時通過X射線衍射分析五月天无码视频、掃描電子顯微分析和混凝土孔結(jié)構分析等多種微觀結(jié)構測試手段，分析了混凝土受熱前后的宏觀性能以及微觀組成和結(jié)構的變化亚洲图片小说视频综合网首页，指出混凝土原水化產(chǎn)物如水化硅酸鈣凝膠和氫氧化鈣的分解以及膨脹性產(chǎn)物氧化鈣的產(chǎn)生是高熱腐蝕形式下混凝土破壞的內(nèi)在原因AV无码午夜福利一区二区三区。

Probability distribution of the ratio between maximum corrosion depth and average corrosion depth is confirmed.

確定了最大腐蝕深度與平均腐蝕深度比值的概率分布形式。

This invention discloses a preparation method for anti-corrosion rare earth magnet material characterizing that it takes the optimized grain-boundary phase design as the starting point on the basis of a dual alloy method to select Nd base alloy with high crystal forming ability as the assist alloy and reduces the temperature of the press mold blank in a quartz container to room temperature from over grain-boundary phase melting point with the water extraction way to get enough cooling rate and guarantee the non-grain-boundary phase, compared with the material of the same composition prepared by ordinary method, the weightlessness of this invented material reduces over 30% after testing the weightlessness of the material by laying it for 96 hours under 121deg.C, 2 atmosphere and 100% humid environment to show the advanced performance of anti-corrosion.

本發(fā)明公開了一種耐腐蝕稀土永磁材料的制備方法丁香久久综合，其特征是它在雙合金法制備工藝的基礎上A几黄色视频，以優(yōu)化晶界相設計為出發(fā)點，選取具有較高非晶形成能力的Nd基合金為輔合金尤物视频品爱网，并在燒結(jié)回火時將置于耐高溫石英容器中的壓型坯件中文av在线网站，從晶界相熔點以上以水淬冷卻的方式降溫至室溫，以達到足夠的冷卻速率亚洲视频欧美日韩，確保得到非晶晶界相huangse网站手机在线观看品爱网，根據(jù)本發(fā)明制得的耐腐蝕稀土永磁材料，通過測量在121℃日韩午夜软件在线观看视频、2個大氣壓以及100％濕度環(huán)境下放置96小時后材料的失重情況这里只有99精品，結(jié)果顯示本發(fā)明得到的材料與常規(guī)方法制備的相同成分的稀土永磁材料相比失重減少了30％以上，充分證明其具備了更優(yōu)越的耐腐蝕性能亚洲欧美日韩图片〗?8岁在线永久观看？蓮V泛應用于電子、汽車黄色网站18岁以下禁止入内、計算機国产AV美女久久、電力、機械欧美专区第1页、能源久久久九色加勒比人妻、環(huán)保、國防操射了视频在线播放、醫(yī)療器械等領域午夜片在线看。

National free service hotline:400 880 2959 Salt Spray test chamber\ sulfur dioxide test chamber\ High temperature test chamber\ Low temperature test chamber\High and low temperature test chamber\ High and low temperature-humidity test chamber\ High and low temperature alternating temperature humidity test chamber\ Desktop constant temperature and humidity test chamber\ Constant temperature and humidity test chamber\ Precise drying test chamber\ Vacuum drying chamber\ High and low temperature shock test chamber\ Ultraviolet accelerated weatherometer\ Xeon lamp weather resistance test chamber\ Air ventilation climatic chamber\0zone climatic chamber\ Rustproof grease humidity test chamber\ Sand and dust test chamber\ Box rain test chamber\ Pipe rain test device\ Drip box\ Alternating mould test chamber\ Salt-mist corrosion laboratory\ Salt-mist corrosion laboratory\ Large high and low temperature stepping into laboratory\ Temperature aging room\ Vacuum UV aging test chamber\ Mechanical drop test bed\ Computer control vibrating table\ Temperature and humidity and vibrating combined testing machine\ Instantaneous temperature test chamber

全國免費服務熱線：400 880 2959主營產(chǎn)品：鹽霧腐蝕試驗箱/二氧化硫試驗箱/高溫試驗箱/低溫試驗箱/高低溫試驗箱/高低溫濕熱試驗箱。/高低溫交變濕熱試驗箱/臺式恒溫恒濕試驗箱/恒溫恒濕試驗箱/精密干燥試驗箱/真空干燥箱/高低溫沖擊試驗箱/紫外光加速老化試驗機/氙燈耐氣候試驗箱/換氣式老化試驗箱/臭氧老化試驗箱/防銹油脂濕熱試驗箱/砂塵試驗箱/箱式淋雨試驗箱/擺管淋雨試驗裝置/滴水試驗裝置/霉菌交變試驗箱/鹽霧腐蝕試驗室/大型高低溫步入試驗室/恒溫恒濕試驗室/鹽霧恒溫恒濕高溫復合試驗箱/溫度老化室/真空紫外老化試驗箱/機械式跌落試驗臺/電腦控制振動臺/溫濕度振動三綜合試驗機/溫度快速變化試驗箱

The results showed that soil corrosion of mild steel was not only influenced by surrounding media but also controlled by the amout, structure and efflorescence extent of corrosion products at different stages.

本工作以埋在蘇打鹽土中的A3鋼為例草草福利国产影院，用實驗論證低碳鋼的腐蝕速度與腐蝕發(fā)生與發(fā)展的不同時期密切相關欧美一区二区一，為認識土壤中鋼鐵的自然腐蝕規(guī)律及其機理提供依據(jù)免费黄色视频精品在线观看。2實驗方法2。