Titanium nitride and titanium aluminum nitride coatings on silica glass, prepared by pyrolysis of a polymeric precursor film

Jaschek, R.; Rüssel, Christian

doi:10.1016/0022-3093(91)90425-6

Cited by 14 publications

(2 citation statements)

References 5 publications

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“…This was demonstrated by reacting Ti(NMe 2 ) 4 with aliphatic primary and secondary amines to form Ti/N-containing polymers, which formed TiN upon pyrolysis . This work was further expanded by exploring zirconium/nitrogen polymers and other MN complexes. − An important advancement was realized by Paine and co-workers, who reported a PCP for the formation of TiNB . Urea has proven to be a reliable metal linker as well.…”

Section: Chemistry and Synthesismentioning

confidence: 99%

Advances in the Synthesis of Preceramic Polymers for the Formation of Silicon-Based and Ultrahigh-Temperature Non-Oxide Ceramics

et al. 2023

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Preceramic polymers (PCPs) are a group of specialty macromolecules that serve as precursors for generating inorganics, including ceramic carbides, nitrides, and borides. PCPs represent interesting synthetic challenges for chemists due to the elements incorporated into their structure. This group of polymers is also of interest to engineers as PCPs enable the processing of polymer-derived ceramic products including high-performance ceramic fibers and composites. These finished ceramic materials are of growing significance for applications that experience extreme operating environments (e.g., aerospace propulsion and high-speed atmospheric flight). This Review provides an overview of advances in the synthesis and postpolymerization modification of macromolecules forming nonoxide ceramics. These PCPs include polycarbosilanes, polysilanes, polysilazanes, and precursors for ultrahigh-temperature ceramics. Following our review of PCP synthetic chemistry, we provide examples of the application and processing of these polymers, including their use in fiber spinning, composite fabrication, and additive manufacturing. The principal objective of this Review is to provide a resource that bridges the disciplines of synthetic chemistry and ceramic engineering while providing both insights and inspiration for future collaborative work that will ultimately drive the PCP field forward.

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Section: Chemistry and Synthesismentioning

confidence: 99%

Advances in the Synthesis of Preceramic Polymers for the Formation of Silicon-Based and Ultrahigh-Temperature Non-Oxide Ceramics

et al. 2023

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“…[9][10][11] To our knowledge, only titanium aluminum polyimide has been investigated as a single-source precursor for Ti-Al-N ceramic composites. 14 On the other hand, molecular-level homogeneity can also be achieved by blending two or more single-component precursors, if they are miscible liquids or solids soluble in organic solvents. 9,11 The obvious benefit of this blending approach over the single-source precursor route is that the desirable compositions of the composite precursors can be easily achieved by adjusting the ratios of the singlecomponent precursors through very simple syntheses.…”

Section: Introductionmentioning

confidence: 99%

Preparation and pyrolysis of a blended precursor possessing TiN and AlN bonds

Cheng

Sugahara

Kuroda

2001

Applied Organom Chemis

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The preparation and pyrolysis of a blended precursor possessing Ti-N and Al-N bonds were investigated. The precursor was prepared by mixing (HAlN i Pr) n , whose main component was a cage-type compound, and an aminolysis product of Ti(NMe 2 ) 4 with MeHNCH 2 CH 2 NHMe with a molar ratio of Ti:Al = 2:1. IR analysis of the products pyrolyzed under NH 3 -N 2 indicated that a large proportion of the organic groups in the precursor were removed by an amine-exchange reaction during the pyrolysis under NH 3 ; thus, the products contained only a small amount of carbon. On the contrary, a considerable amount of carbon was present in the product pyrolyzed under Ar. Composites consisting of AlN and an NaCl-type compound were obtained after pyrolysis of the precursor under both NH 3 -N 2 and Ar. The composition of the NaCl-type compound depended significantly on the pyrolysis atmosphere.

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Novel access to polyboro‐ and polyalumosilazanes suitable as precursors for ternary nitride ceramics

Löffelholz

Jansen

1995

Advanced Materials

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Communications ADVANCED hl ATE R I A LSbottom edge of the catalyst particle, leading directly to a nested cylindrical structure. This is quite different from the usual metal-catalyzed VGCF[36 -401 and metal catalyzed carbon nanotubes. [2'-241 The relationship between various crystals and the tip structures of the carbon nanotubes they catalyze is now being considered in detail. ExperimentalPitch carbon was obtained by the thermal decomposition of 3,4,9,10perylenetetracarboxylic dianhydride at 800 "C under a nitrogen atmosphere Hafnium dioxide (99.9% purity) was mixed with the pitch carbon in a weight ratio of 1 :4, and the mixture was thermally annealed at 900°C under vacuum. This produced hafnium carbide, a dark gray solid with a fine crystalline texture. After cooling, the mixture was pressed into a 7 mm hole drilled into a tubular graphite rod 10 mm in diameter (99.99 % purity). During the course of electrlc arc vaporization of the hafnium-composite graphite electrode, the inner pressure of a water-cooled chamber was maintained at 200 Torr and a DC current of 100 A was supplied across the electrodes.X-ray diffraction measurements were performed using a Rigaku RAD Ill-B diffractometer (Cu-Ka radiation, 1.5418 A), The Carbonaceous deposits were mechanically milled, moistened with ethanol, and set in a sample holder prior to the XRD measurements. TEM observations of the milled powder confirmed that the carbon nanotubes and gigantic fullerenes were not damaged by the mechanical action of the milling operation. The carbonaceous deposits formed on the negative electrode were removed by sonication in ethanol for 10 s. This solution was then spread onto a collodion mesh and the HREM observations were carried out using a JEOL JEM-2000FX TEM operated at 200 kV. The samples were not cooled during the observations.

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Titanium nitride and titanium aluminum nitride coatings on silica glass, prepared by pyrolysis of a polymeric precursor film

Cited by 14 publications

References 5 publications

Advances in the Synthesis of Preceramic Polymers for the Formation of Silicon-Based and Ultrahigh-Temperature Non-Oxide Ceramics

Advances in the Synthesis of Preceramic Polymers for the Formation of Silicon-Based and Ultrahigh-Temperature Non-Oxide Ceramics

Preparation and pyrolysis of a blended precursor possessing TiN and AlN bonds

Novel access to polyboro‐ and polyalumosilazanes suitable as precursors for ternary nitride ceramics

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