The relationship between shock wave velocity and particle velocity of no - porous enstatite can be expressed as : d = 3 . 771 + 1 . 516u where the unit of velocity is km / s 可以認(rèn)為,從p phugongiot數(shù)據(jù)看,在50 160gpa范圍內(nèi),頑火輝石的高壓相是穩(wěn)定的。
( 3 ) by using the new method put out in ( 2 ) , hugoniot data of no - porous samples of enstatite ( mg0 . 92 , fe0 . 08 ) sio3 which initial density is 3 . 273g / m3 , were reduced and the modified hugoniot data shows very small dispersivity ( 3 )用( 2 )中提出的新方法,對前人和本文的頑火輝石hugongiot實(shí)驗(yàn)數(shù)據(jù)進(jìn)行了初始孔隙度修正。結(jié)果顯示,不同研究者所得的hugongiot數(shù)據(jù)的分散性大大減小。
So it is impossible for enstatite to decompose to oxides between 50 to 140gpa . ( 5 ) the bulk modulus k0s and its first derivative of pressure k0s " were calculated from the experimental hugoniot data , by using eularian limit strain theory 3 )根據(jù)本文頑火輝石hugoniot實(shí)驗(yàn)數(shù)據(jù)(結(jié)合前人的實(shí)驗(yàn)數(shù)據(jù)l用歐拉有限應(yīng)變理論計(jì)算得到的頑火輝石零壓炸彈性模量及其對壓力的一階導(dǎo)數(shù)為: k叮一266gpa , k ; ,二4
The linear relationship between shock wave velocity d and particle velocity u of our samples were obtained : d = 3 . 701 + 1 . 527u there the unit of relocity is km / s . no phase transition shows for enstatite with perovskite structure according to the experimental linear d - u line up to 110gpa 實(shí)驗(yàn)結(jié)果表明,在80 115gpa壓力范圍內(nèi)本文所用頑火輝石的沖擊波速度d與粒子速度u可用線性關(guān)系: d = 3 . 247 + 1 . 626u來描述。
Considering that no phase transition of enstatite with perovslite structure were found during these static high pressure experiments , the consistence of the bulk modulus also supports that the high pressure phase of perovskite structure of enstatite is stability between 50 - 140gpa 考慮到靜高壓下的數(shù)據(jù)是在實(shí)驗(yàn)中未發(fā)現(xiàn)頑火輝石高壓相有相變的情況下得到的。因此,動高壓與靜高壓實(shí)驗(yàn)數(shù)據(jù)的一致性支持了在80 ? 140gpa壓力內(nèi)預(yù)火輝石的高壓相保持穩(wěn)定的觀點(diǎn)。
( 4 ) the hugoniot of the mixture of mgo ( mw ) and sio2 ( st ) were calculated by the additire principle of hugoniot for mixture , and compared with the experimental hugoniot of enstatite . the results shows that there exists large difference between both d - u relationship and p - n curve for the two hugoniot 516u ( 4 )用混合物hugongiot線的疊加性原理計(jì)算了mgo ( mw )和引。 ( st )混合體系的hugongiot線,經(jīng)過與頑火輝石實(shí)驗(yàn)hugongiot數(shù)據(jù)對比,無論是從心關(guān)系還是從一產(chǎn)關(guān)系上看兩者均有較大差距。
The main work and achierement are as following : ( 1 ) by using shock impedance matching technique and electric probe method , 5 shots of impact experiments were conducted to measure the hugoniot equation of state for enstatite ( mg0 . 92 , fe0 . 08 ) sio3 with the average initial density 3 . 05g / m3 from shock pressure 50 gpa to 115gpa , using two stage light gas gun 本文研究取得的認(rèn)識主要有以下幾點(diǎn): ( 1 )用阻抗匹配法和電探針技術(shù)在80 115gpa壓力范圍內(nèi)對平均初始密度為3 . 05g / cm ~ 3的頑火輝石樣品進(jìn)行了5發(fā)hugoniot狀態(tài)實(shí)驗(yàn)測量。
Shock wave compression technique has play an important role in the understanding of the material composition thermodynamic state and physical properties of the earth ' s ulterior . in this article , the stabling of high - pressure phase of one of the main candidate materials of the earth ' s lower mantle ? enstatite ( mg0 . 92 , fe0 . 08 ) sio3 were investigated through the experimented measurement of hugoniot equation of state , and together with thermodynamic calculation and analysis 本學(xué)位論文以沖擊壓縮技術(shù)為手段,從測量其hugoniot物態(tài)方程入手,結(jié)合高壓物理和熱力學(xué)理論分析,較深入地研究了下地幔中的一種主要候選組分頑火輝石( mg _ ( 0 . 92 ) , fe _ ( 0 . 08 ) ) sio _ 3在與下地幔大致相當(dāng)?shù)臏囟葔毫l件下的相態(tài)-鈣鈦礦型結(jié)構(gòu)的相穩(wěn)定性。
百科解釋
Enstatite is the magnesium endmember of the pyroxene silicate mineral series enstatite (MgSiO3) - ferrosilite (FeSiO3). The magnesium rich members of the solid solution series are common rock-forming minerals found in igneous and metamorphic rocks.