SEM is used to observe the morphology of the samples after the corrosion test, and the effects of ZrO2 concentration on the corrosion resistance of the nano composite electroforming deposits are analyzed, and its corrosion resistance mechanism is discussed.

用SEM觀察了各種樣品腐蝕后的表面形貌A级日本一线www，分析了納米ZrO2微粒復(fù)合量對復(fù)合電鑄層耐蝕性的影響超碰在线最新发布免费，同時(shí)對納米復(fù)合電鑄層的腐蝕機(jī)理進(jìn)行了初步探討。

According to corrosion damage distribution law, cumulative distribution law of corrosion damage is conducted by four membership functions of fuzzy equivalent corrosion damage.

結(jié)合腐蝕損傷的分布規(guī)律，選用了4種形式的模糊等效腐蝕損傷的隸屬函數(shù)來表示腐蝕損傷的累積分布規(guī)律99久久久无码国产精品动漫。

The three fail form of scoring,fillister and corrosion for 127 mm(5) S135 drill rod joint ,corrosion rate and corrosion production have been researched by means of analysis of chemical composition and microstructure,testing of mechanical property.

通過化學(xué)成分分析国产精品美女妓女网站、力學(xué)性能測試、組織結(jié)構(gòu)分析和高溫高壓模擬試驗(yàn)91偷拍网，對127 mm(5)S135鉆桿接頭內(nèi)壁出現(xiàn)劃痕999一级黄片、凹槽和腐蝕三種失效形式天堂网在线视频播放，鉆桿的腐蝕速率和腐蝕產(chǎn)物進(jìn)行分析研究另类视频图片。

It is discussed each hydronium effect to corrosion action of extraction liquid under wells and the results show that the shape and its structure of surface corrosion produced films of N80 steel to metal has serious effect of further corrosion.

美國的Mississipi和Uttle Greek油田在進(jìn)行COZ 驅(qū)油試驗(yàn)時(shí)發(fā)現(xiàn)，在未采取CO：腐蝕防護(hù)措施時(shí)免费视频福利，生產(chǎn)井的管壁不到五個(gè)月便腐蝕穿孔国产美女一级A片免费观看9，相當(dāng)于腐蝕速率為12.sm而a。

Wear and corrosion involve mechanical and electrochemical mechanisms, and the combined action of these mechanisms often result in significant mutual reinforcement. To measure the effect on wear-corrosion resistance of the chemical and abrasion wear separately at the same time, wear-corrosion synergism rate is selected to indicate the nature and degree of the chemical and abrasion wear.

腐蝕磨損是同時(shí)涉及力學(xué)因素和電化學(xué)因素的復(fù)雜的材料的流失過程操操日日日操，通常條件下亚洲一区国产高清视频在线观看，腐蝕磨損不是純磨損和純腐蝕的簡單疊加，還有兩者間的協(xié)同作用一级黄色一级黄色一级黄色一级黄色a级毛片，為定量描述腐蝕與磨損的促進(jìn)程度黄色视频你们懂的、進(jìn)一步完善腐蝕磨損機(jī)理，本文利用腐蝕磨損協(xié)同作用率值的大小來分析腐蝕和磨損的交互作用程度黄片AAAAAAAAAAAAA，結(jié)果表明：本文制備的鍍層亚洲强奸视频在线观看，在5％H_2SO_4溶液中腐蝕磨損時(shí)，機(jī)械磨損是造成鍍層表面材料流失的主要原因人人操人人干人人玩人人摸人人看人人，腐蝕和磨損的協(xié)同作用為次要因素亚洲日韩在线一区二区三区。

It has both good wear resistance, and good corrosion resistance and strong resistance to pitting corrosion, intergranular corrosion resistance.

它既有良好的耐磨性，又有良好的耐腐蝕性和較強(qiáng)的抗點(diǎn)蝕国产一级A婬片试看26分钟、抗晶間腐蝕能力无码97视频。

Using metallographic analysis, original structure and surface deficiency were obtained, the influence of the structure on corrosion speed was settled, the surface macrography patterns of welded joint in different temperature and concentration were got. Microscopic patterns after corrosion in different condition were gained by SEM, though which the influence of temperature, concentration and structure on corrosion was easily observed.

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When Ts is 850 ℃,grains are fined and the size of βphase and the distance betweenβphase pasticles are small.The corrosion barrier effect ofβ phase onαphase is enhanced and the iron content does not increase much at this temperature.So the corrosion resistance is improved.The corrosion resistance of AZ70 alloy falls off when Ts is 890 ℃,which attributes to the presence of microporosity,hot cracking and increase of iron content.

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It is common that reinforced concrete bridges are damaged with steel corrosion which not only reduces the strength of structures but also changes their failure mode if there exists nonsymmetry corrosion developed to some extent. Nonsymmetry corrosion can translate ductile fracture into brittle failure and translate flexural failure into torque failure, etc.

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