熱緻密化 的英文怎麼說

The results indicate that ( a ) before heat treatment, with the increasing of substrate temperatures, content of lower valency ( tij + ) decreases, the stoichiometric proportion of o / ti in all samples is about 2 ; the films have amorphous incompact columnar fiber structure, and with the increasing of substrate temperature, the size of columnar fiber increases ; the films have good hyalescence in visible range and great absorbability at the wavelength of 350nm ; optical constants of the films are calculated from the transmittance spectrums in visible range by mathematical analysis of the orders of interference, the results show that the refractive ind

研究結果表明， （ a ）熱處理前，隨著基片溫度的增加，薄膜中的低價氧化鈦含量逐漸減少，化學計量比趨于o ti = 2 ；薄膜具有非晶態不緻密的柱狀纖維結構，柱狀纖維的尺寸隨基片溫度的升高而增加;薄膜在可見光范圍內透明，在波長為35onzn時嚴重吸收，利用干涉級次法分析了薄膜的光學常數，結果表明，薄膜的折射率隨基片溫度的升高而增加，根據計算結果得到了tioz薄膜在不同基片溫度下的折射率色散曲線。

Before 900 c, ti reacts with al to form tial intermetallics ; above 900 c, c reacts with remain ti to form tic triggered by the exothermal reaction of ti and al ; tial reacts with tic to produce dense tial / ti2alc composites

間的放熱反應引發c和未反應完全的ti反應生成tic ; tiai金屬間化合物和tic反應併合成緻密tiai / tizaic復合材料。通過保溫階段， tizaic長成層狀多品結構，同時復合材料緻密化。

But it also includes two fatal disadvantages : first, at is difficult to be sintered and its density is low, which causes its lower strength ; second, in the temperature range of 1023 - 15 73 k, at can decompose into al2o3 and tio2 easily, which can cause the stress concentrated and raise the heat expansion rate

但是該材料本身存在的兩大致命的缺點，在很大程度上限制了它的廣泛應用： （ 1 ） 、鈦酸鋁難以燒結，燒結體的緻密度低，因而強度不高； （ 2 ） 、在750 1300的溫度范圍內易分解成氧化鋁和二氧化鈦，造成材料內部應力集中，並使材料的熱膨脹率升高。

In this paper, nanosized al2o3 ceramic particles were chose as reinforcing phase. enhanced with ultrasonic wave the particles were covered with copper using method by electroless plating, the copper - matrix composite was developed by hot - press sintering process of the composite powder. the composition, microstructure, hardness, density and dry sliding wear property of the new material have been studied

研究路線為：選用納米級al _ 2o _ 3陶瓷顆粒作為增強相，在超聲波的環境中用化學鍍的方法完成對納米al _ 2o _ 3陶瓷顆粒表面的金屬銅包覆，採用熱壓燒結成型技術以復合粉末為原料制備成納米al _ 2o _ 3陶瓷顆粒增強銅基復合材料，研究分析復合材料的成分、組織結構、硬度以及緻密度，對試樣進行了干滑動摩擦磨損實驗。

The research on the properties of the copper nanoparticles / paraffin thermosensitive composite materials reveals : the thermal sensitivity and the thermal expansion are " aried by the cempress moulding in heat condition with the change in density ; the thermal sensitivity is varied by the mechanical milling with the change in particle shape and particle dimension ; the mass ration of copper and paraffin in the composite materials also affects the thermal sensitivity, the thermal expansion and the thermal stability with the change in copper nanoparticles and paraffin interface

對復合顆粒進行壓力成型后制備的復合材料進行性能測試分析表明：熱壓成型工藝通過改變復合材料的緻密度來影響材料的熱敏性和熱膨脹性。高能球磨工藝主要通過改變球磨時間使銅粒形狀和粒徑發生變化來影響復合材料的熱敏性，以及改變銅粉和石蠟的質量比使納米銅粒和石蠟的復合界面發生變化來影響材料的熱敏性、熱膨脹性和熱穩定性。

Densification process and mechanical properties of large dimension heat - resistant al alloy pipe blank

大尺寸耐熱鋁合金管坯的緻密化及性能研究

Microstructure of the composite layer was analyzed with help of optical microscope, scanning electronic microscope ( sem ), electronic probe microanalysis ( epma ) and x - ray diffraction ( xrd ). the compacting of the billet and the forming mechanism of the carbide reinforcement were studied based on thermodynamics and kinetics of reaction, sintering theory and the result of dta. at the same time, the wear - resistance of the composite layer was studied under condition of dry sliding friction

利用光學顯微鏡、掃描電子顯微鏡、電子探針以及x -射線衍射儀，分析了表面復合層的基體組織結構；運用反應熱力學、動力學、粉末燒結理論和燃燒合成理論，結合差熱分析結果，探討了表面復合層壓坯的燒結緻密化原理和碳化物增強相的形成機理；利用坯塊在真空燒結爐不同溫度下的燒結出來的顯微組織分析，模擬出坯塊的燒結過程中的化學反應過程。

The one deposited at 300 substrate temperature owns denser crystallites. during the annealing process, with the increasing of annealing temperature, the crystallites become bigger, and crystalline phase begins to transfer. when the annealing temperature gets to 800, tio2 transfers to rutile structure completely

（ 2 ）常溫下制備的tio _ 2薄膜是無定型的， 300濺射薄膜表面有緻密的晶粒，熱處理溫度升高，晶粒變大，晶相開始轉化， 800退火tio _ 2完全轉化為金紅石結構。

They may originate from disks or outflows and may be to submit to graduate school, acadcmia sinica pumped by far - infrared radiation. hot ammonia molecular cores in the latest stage of evolution are intimately associated with

氨分子熱輻射的觀測顯示在演化最後階段，熱分子核緊密地與超緻密hii區聯系在一起並且在進行外流運動。

But the densification of ceramic materials is vitally important to mechanical, thermal shock and fatigue properties

但是，陶瓷材料的緻密化對其力學、抗熱震和熱疲勞性能有至關重要的影響。

The results indicate that arc melting is a good method to produce nb - si system intermetallics due to its simpler technics, lower cost and compact products. however, powder metallurgy is found to be not suitable to produce the nb - si system intermetallics due to its coarse and loose products resulting from the poor molding property of nb and si mixed powders. optical floating zone technology, which is used to fabricate nb - si intermetallic composites for the first time, is also found to be a good way to produce nb - si system intermetallics because of its compact products and good property despite of its relatively high cost

結果表明，電弧熔煉方法制備得到的nb - si系金屬間化合物比較緻密，且制備工藝簡單，經濟實用，是一種合適的nb - si系金屬間化合物制備方法；由於nb 、 si元素粉末的成型性很差，用粉末冶金方法（熱壓燒結和冷等靜壓）制備的nb - si系金屬間化合物表面粗糙、緻密度低，且成本較高，不宜用於制備nb - si系金屬間化合物；首次用光學懸浮單晶生長技術制備的nb - si系金屬間化合物復合材料緻密度很高，盡管成本稍高，但由於性能最佳，也是一種合適的nb - si系金屬間化合物制備方法。

Sintering speed increased greatly with the help of great quantity of heat of the molten iron, the great quantity of heat sent out from the carbonizing reaction and a little quantity of liquid, this sintering type is an instantaneous sintering, the sintering compacting can carry completely in a few minutes, the degree of sintering compacting is very high. ( 6 ) the vc - fe surface composite has high rigidity, it ' s rigidity exceeds 60hrc, under condition of dry sliding friction and overloading

鑄造燒結時，過熱鐵水的巨大熱流密度沖擊、粉料壓坯中的碳化反應的放熱以及壓坯中少量液相的產生使壓坯的燒結速度大大提高，此時屬瞬間液相燒結，在十幾分鐘內燒結過程即可完成，可達到很高的緻密化程度。 （ 6 ）鑄態下vc一fe表面復合材料具有很高的硬度，其鑄態硬度） 60hrc 。

Dense shaped refractory products - determination of permanent changs in dimension on heating

緻密定形耐火製品加熱永久線變化試驗方法

The stainless steel and carbon steel can be excellently bonded under lower pressure by using silver intermediate sandwich materials and the oxide film on stainless steel can be destroyed effectively by argon gas shielding in the heating process

結果表明，採用自製的銀基中間夾層材料可以使兩種母材在較低的壓力下實現良好的復合；加熱過程中採用氫氣保護能夠有效地去除不銹鋼表面緻密的氧化膜。

Perovskite - type complex oxides of la1 - xcaxcro3 compositions are attracting growing attention because of their superior electronic conductivity and excellent chemical stability in both oxidizing and reducing atmospheres, which makes them promising candidate materials for many important applications, such as interconnectors for solid oxide fuel cells ( sofc ), heating elements for high temperature furnaces, and current collecting electrodes in magneto - hydrodynamics ( mhd ). in this dissertation, the gnp ( glycine - nitrate process ) method has been employed to synthesize la1 - xcaxcro3 oxides. the synthesis and preparation, sinterability, electrical conducting properties and thermal expansion properties of la1 - xcaxcro3 oxides have been investigated

本文採用gnp （ glycine - nitrateprocess ）法制備了la _ （ 1 - x ） ca _ xcro _ 3材料，對制備方法與工藝參數、材料燒結性能、電性能以及熱膨脹性能進行了研究，分析了ca ~ （ 2 + ）含量、粉體顆粒形態對材料燒結行為、燒結緻密化溫度的影響，並研究了ca ~ （ 2 + ）含量、粉體顆粒形態對材料晶體結構、顯微結構和物理性能的影響，其目的在於為該類高溫電子導體的進一步研究利應用提供實驗和理論依據。

An optimized cvi - pip process has been achieved, by which the c / sic composites with 2. 1 ig / cm3 high density and uniformity are fabricated in 200 hours. the microstructure and composition of pyrolytic carbon interphase and cvi - pip silicon carbide matrix in the c / sic composites are investigated with the help of polarization microscope, scanning electron microscope, and x - ray diffraction technique, etc. the structure characteristic of pyrolytic carbon interphase and cvi - pip silicon carbide matrix, and effects of cvi - pip process on it are summarized and discussed. by growth course and feature of pyrolytic carbon interphase and cvi - pip silicon carbide matrix analyzed, a whole - course densification mechanism of lamellar - growth - pattern is proposed to explain the densification phenomenon, which makes a systematic understanding on the feature of pyrolytic carbon interphase and cvi - pip silicon carbide matrix, and the multiple stitching interface binding

根據熱解碳中間相、 cvi - pip系sic基體相的組織構成與外貌特徵，通過對熱解碳中間相、 cvi - pip系sic基體相的生長過程和生長特徵進行分析，提出了基於層生長模式的緻密化過程理論，解釋了熱解碳中間相、 cvi - pip系sic基體相以及釘扎誘導結構多重界面的形成： （ 1 ）在1150下， cvi - sic亞基體相遵從「過飽和?凝聚?融合」機理沉積，以8f型? sic為主，同時還會有少量4h型? sic ，無游離si和游離c存在； （ 2 ） pip - sic亞基體相由非晶態sic以及彌散分佈的- sic微晶、 si - o - c和游離c組成； （ 3 ）熱解碳中間相與碳纖維增強相之間、 cvi - sic亞基體相之間形成滲透釘扎結構過渡界面， pip - sic亞基體相與摘要cvi一sic亞基體相之間形成誘導結構過渡界面。

The experimental techniques ( such as sedimentation equipment, controlling the size and size distribution of powders, the concentration of suspension ) have been devised subtly. on the basis of theoretical and densification design, the w - mo - ti fgm has been obtained by particle settling and hot pressing sintering. the structures of specimen were observed by electron probe

通過對實驗工藝，如沉降設備、原料粒度及粒度分佈的控制、懸浮液濃度等方面進行精細的設計，在理論設計和緻密化研究的基礎上，通過顆粒共沉降得到梯度沉積體，並通過真空熱壓燒結得到w - mo - ti功能梯度材料。

Dense shaped refractory products - determination of permanent change in dimensions on heating

緻密成型的耐火產品.加熱時尺寸永久變化的測定

The la1 - xsrxmno3 powder has been sintered by constant pressure sintering, heat pressure sintering ( hp ) and spark plasma sintering ( sps )

通過無壓燒結，熱壓燒結和sps燒結工藝對lal . xsrxmno3粉末進行燒結，其中sps燒結在900 ，保溫1omin得到的燒結樣品緻密化程度最好。

The technique can avoid produce ti / al chemical compound in high temperature. the chemical compound would increase the difficulty of pressing. the research on vacuum degassing and temperature of pressing can acquire the ideal composite powders of highly

對ti / al復合粉進行真空脫氣及低溫熱壓制可以降低坯料中空氣含量並提高粉末顆粒的界面結合強度，同時避免高溫下生成tial基化合物增加緻密難度，對真空脫氣及壓制溫度進行研究，獲得理想的緻密度極高的復合粉末。