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1、硫?qū)饎偸髥尉Ш铣傻挠绊懻饎偸蔷哂兄T多優(yōu)異性能的極限材料,廣泛用于工業(yè)、科技、國(guó)防、醫(yī)療衛(wèi)生等領(lǐng)域。摻硫金剛石具有諸多優(yōu)良的性質(zhì),比普通金剛石顯示出更優(yōu)異的性能,因而成為當(dāng)前金剛石摻雜屮的研究熱點(diǎn)。本文是通過(guò)將一定比例的硫粉均勻的加入到金剛石合成體系屮,在六面頂壓機(jī)上利用高溫高壓方法合成摻硫金剛石。實(shí)驗(yàn)通過(guò)設(shè)置摻硫梯度,研究了不同含量的硫?qū)饎偸铣傻挠绊?。?shí)驗(yàn)分為兩個(gè)部分進(jìn)行研究:(1)實(shí)驗(yàn)摸索階段:通過(guò)合成不摻加硫的金剛石確定實(shí)驗(yàn)條件,最終確定實(shí)驗(yàn)條件為,壓力:74.5Mpa,晶床和堵頭
2、尺寸:6mm和7mm;(2)摻硫金剛石合成階段:在笫一階段設(shè)置的實(shí)驗(yàn)條件下,將不同比例的硫粉摻入金剛石合成體系中,合成金剛石。通過(guò)研究發(fā)現(xiàn):隨著系統(tǒng)中的硫含量的增加,金剛石晶體的顏色開始逐漸發(fā)生變化,由黃色逐漸變?yōu)榘迭S和黑色。同時(shí)隨著含硫量的增加,晶體的尺寸和完整度減少,而且晶體表而上的凹坑越來(lái)越嚴(yán)重,并且品體中包裹體含量增加,并由彌散狀逐漸增加到貫穿整個(gè)晶體內(nèi)部。通過(guò)對(duì)摻硫和未摻硫的金剛石拉曼圖譜進(jìn)行對(duì)比,我們得出在誤差允許的范圍內(nèi)拉曼峰和半高寬都基本在很小范圍內(nèi)波動(dòng),金剛石拉曼峰基本沒有變化。關(guān)
3、鍵字:金剛石;咼溫咼壓;硫摻雜。AbstractDiamondistheultimatematerialhasmanyexcellentproperties,iswidelyusedinindustry,scienceandtechnology,nationaldefense,medicalandhealthfields.Sulfurdopeddiamondhasmanyexcellentproperties,thanordinarydiamondshowsmoreexcellentperforma
4、nce,hasbecomethecurrentresearchfocusofdopingofdiamond.Thispaperissulfurpowderthroughacertainproportionoftheevenlyaddedtothediamondsyntheticsystem,synthesisofsulfurdopeddiamondbyusinghightemperatureandhighpressureinthesixcubicpress.Theexperimentbysettin
5、gthesulfurdopinggradient,theeffectsofdifferentcontentofsulfurindiamondsynthesis.Theexperimentwasdividedintotwoparts:(1)experimentfumblestage:theexperimentalconditionsweredeterminedbysynthesiswithoutadditionofsulfurdiamond,ultimatelydeterminetheexperime
6、ntalconditions,pressure:74.5Mpa,crystalbedandplugsize:6mmand7mm;(2)sulfurdopeddiamondsynthesisstage:thefirststagesettingnext,thesulfurpowderbyaddingdifferentproportionintodiamondsynthesissystem,syntheticdiamond.Throughthestudyfoundthat:withtheincreaseo
7、fsulfurcontentinthesystem,thecolorofdiamondcrystalsgraduallybegantochange,graduallychangefromyellowtodarkyellowandblack.Atthesametimewiththeincreaseofsulfurcontent,sizeandtheintegrityofthecrystalisreduced,andpitsonthesurfaceofcrystalismoreandmoreseriou
8、s,andinclusionsinthecrystalcontentincreased,andthescatteredgraduallyincreasedtorunthroughthewholecrystal.ThroughcomparisonofdiamondRamanspectraofsulfurdopedandundopedsulfur,wedrawinthetoleranceoftheRamanpeaksandFWHMarebasicvariesinasmal