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氦氣的用途

利用(yong)(yong)(yong)(yong)(yong)其－268.9℃的(de)(de)低(di)沸點，液(ye)(ye)(ye)氦可(ke)以用(yong)(yong)(yong)(yong)(yong)于(yu)超(chao)(chao)(chao)低(di)溫冷(leng)卻(que)。在懸(xuan)浮列車(che)等(deng)領(ling)(ling)域(yu)中(zhong)(zhong)(zhong)(zhong)廣(guang)(guang)受關注的(de)(de)超(chao)(chao)(chao)導(dao)(dao)體(ti)(ti)(ti)應用(yong)(yong)(yong)(yong)(yong)中(zhong)(zhong)(zhong)(zhong)，氦氣(qi)(qi)(qi)(qi)是不可(ke)或(huo)缺的(de)(de)。此外，由(you)于(yu)化(hua)學(xue)性質不活潑和輕于(yu)空(kong)氣(qi)(qi)(qi)(qi)等(deng)特征(zheng)，氦氣(qi)(qi)(qi)(qi)常用(yong)(yong)(yong)(yong)(yong)于(yu)飛船(chuan)或(huo)廣(guang)(guang)告氣(qi)(qi)(qi)(qi)球中(zhong)(zhong)(zhong)(zhong)的(de)(de)充入氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)，這一用(yong)(yong)(yong)(yong)(yong)途(tu)也是眾所周知的(de)(de)。在海洋開(kai)發領(ling)(ling)域(yu)的(de)(de)呼吸用(yong)(yong)(yong)(yong)(yong)混合氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)中(zhong)(zhong)(zhong)(zhong)，以及(ji)醫療(liao)領(ling)(ling)域(yu)的(de)(de)核(he)磁(ci)共振成像(xiang)設(she)備(bei)的(de)(de)超(chao)(chao)(chao)導(dao)(dao)電(dian)磁(ci)體(ti)(ti)(ti)冷(leng)卻(que)的(de)(de)用(yong)(yong)(yong)(yong)(yong)途(tu)中(zhong)(zhong)(zhong)(zhong)，氦氣(qi)(qi)(qi)(qi)都得到(dao)廣(guang)(guang)泛的(de)(de)應用(yong)(yong)(yong)(yong)(yong)：軍(jun)工、科研(yan)、石化(hua)、制冷(leng)、醫療(liao)、半導(dao)(dao)體(ti)(ti)(ti)、管道檢(jian)(jian)漏、超(chao)(chao)(chao)導(dao)(dao)實驗(yan)、金(jin)屬(shu)制造(zao)、深(shen)海潛水、高精度焊接、光電(dian)子產品(pin)生產等(deng)。可(ke)用(yong)(yong)(yong)(yong)(yong)于(yu)低(di)溫冷(leng)源和超(chao)(chao)(chao)導(dao)(dao)技術。也可(ke)用(yong)(yong)(yong)(yong)(yong)作高真空(kong)裝(zhuang)置、原子核(he)反應堆、宇(yu)宙飛船(chuan)等(deng)的(de)(de)檢(jian)(jian)漏劑及(ji)鎂、鋯、鋁、鈦(tai)等(deng)金(jin)屬(shu)焊接的(de)(de)保護(hu)氣(qi)(qi)(qi)(qi)。在火箭、宇(yu)宙飛船(chuan)事用(yong)(yong)(yong)(yong)(yong)作輸送液(ye)(ye)(ye)氫、液(ye)(ye)(ye)氧等(deng)液(ye)(ye)(ye)體(ti)(ti)(ti)推進劑的(de)(de)加(jia)壓氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)。還用(yong)(yong)(yong)(yong)(yong)作原子反應堆的(de)(de)清洗劑、氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)色譜分析(xi)分析(xi)的(de)(de)載氣(qi)(qi)(qi)(qi)、氣(qi)(qi)(qi)(qi)球充氣(qi)(qi)(qi)(qi)、電(dian)弧(hu)焊用(yong)(yong)(yong)(yong)(yong)保護(hu)氣(qi)(qi)(qi)(qi)、潛水用(yong)(yong)(yong)(yong)(yong)混合氣(qi)(qi)(qi)(qi)和氣(qi)(qi)(qi)(qi)體(ti)(ti)(ti)溫度計(ji)的(de)(de)填充氣(qi)(qi)(qi)(qi)。