本文關(guān)鍵詞： Cu-V-Cr合金 微觀組織 氫傳輸性能 雙相結(jié)構(gòu) 抗氫脆　出處：《材料科學(xué)與工藝》2017年01期 　論文類型：期刊論文

【摘要】：氫分離金屬膜是目前備受關(guān)注的一種用于氫氣提純的功能材料.為了獲得綜合性能優(yōu)異且價(jià)格低廉的氫分離金屬膜,本文借鑒"多相構(gòu)成、功能分擔(dān)"的設(shè)計(jì)理念,通過(guò)非自耗電弧熔煉爐制備合金,采用XRD、掃描電子顯微鏡等手段研究合金相組成及微觀組織,采用課題組自主設(shè)計(jì)的儀器設(shè)備在不同溫度和壓力下進(jìn)行氫溶解和氫滲透實(shí)驗(yàn),開(kāi)發(fā)了具有雙相結(jié)構(gòu)的新型Cu-V-Cr氫分離合金.結(jié)果發(fā)現(xiàn):該合金微觀組織中的bcc-(V)固溶體相起滲氫作用,是氫的主要擴(kuò)散通道;而組織中的fcc-(Cu)固溶體相起提高塑性作用.合金化元素Cr主要固溶在bcc-(V)中,顯著降低合金的氫溶解能力,大幅度提高抗氫脆性能,但同時(shí)也降低合金的氫擴(kuò)散系數(shù)和滲氫性能.實(shí)驗(yàn)表明,具有雙相結(jié)構(gòu)的Cu-V-Cr氫分離合金有望達(dá)到氫溶解、擴(kuò)散和滲透性能的良好匹配,從而同時(shí)實(shí)現(xiàn)優(yōu)異的氫滲透性能與抗氫脆性能.
[Abstract]:Hydrogen separation metal membrane is a kind of functional material used for hydrogen purification. In order to obtain hydrogen separation metal membrane with excellent comprehensive performance and low cost, this paper draws lessons from the design idea of "multiphase composition, function sharing". The alloy was prepared by non-consumable arc smelting furnace. The phase composition and microstructure of the alloy were studied by means of XRD and scanning electron microscope. The hydrogen dissolution and hydrogen permeation experiments were carried out at different temperatures and pressures with the instruments designed by the research group. A new type of Cu-V-Cr hydrogen separation alloy with dual phase structure was developed. The results show that the solid solution phase in the microstructure of the alloy plays an important role in hydrogen diffusion. However, the solid solution phase of fcc-cu in the microstructure plays an important role in improving the plasticity. The alloying element Cr is mainly dissolved in bcc-V), which significantly reduces the hydrogen solubility of the alloy and greatly improves its hydrogen embrittlement resistance. But at the same time, the hydrogen diffusion coefficient and hydrogen permeation properties of the alloy are also reduced. The experimental results show that the hydrogen separation alloy with two-phase structure is expected to achieve a good match of hydrogen dissolution, diffusion and permeability. Thus, the excellent hydrogen permeation performance and hydrogen embrittlement resistance are realized simultaneously.
【作者單位】： 哈爾濱理工大學(xué)材料科學(xué)與工程學(xué)院;哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51274077;51271068;51425402)
【分類號(hào)】：TB34;TQ116.2

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