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Linseis Optical Dilatometer and Heating Microscope Brochure THERMAL ANALYSIS Optical Dilatometer DIL L74 Heating Microscope Since 1957 LINSEIS Corporation has been deliv- ering outstanding service, know how and lead- ing innovative products in the field of thermal analysis and thermo physical properties. Customer satisfaction, innovation, flexibility and high quality are what LINSEIS represents. Thanks to these fundamentals our company enjoys an exceptional reputation among the leading scientific and industrial organizations. LINSEIS has been offering highly innovative benchmark products for many years. The LINSEIS business unit of thermal analysis is involved in the complete range of thermo Claus Linseis analytical equipment for R&D as well as qual- Managing Director ity control. We support applications in sectors such as polymers, chemical industry, inorganic building materials and environmental analytics. In addition, thermo physical properties of solids, liquids and melts can be analyzed. LINSEIS provides technological leadership. We develop and manufacture thermo analytic and thermo physical testing equipment to the high- est standards and precision. Due to our innova- tive drive and precision, we are a leading manu- facturer of thermal Analysis equipment. The development of thermo analytical testing machines requires significant research and a high degree of precision. LINSEIS Corp. invests in this research to the benefit of our customers. 2 German engineering Innovation The strive for the best due diligence and ac- We want to deliver the latest and best tech- countability is part of our DNA. Our history is af- nology for our customers. LINSEIS continues fected by German engineering and strict quality to innovate and enhance our existing thermal control. analyzers. Our goal is constantly develop new technologies to enable continued discovery in Science. 3 OPTICAL DILATOMETER The Optical Research Dilatometer L74 was de- sample is not burdened with any force. For veloped to meet the demanding applications of soft samples or samples that melt during the the glass, ceramics, metal and energy industry. measurement , this leads to a result, which is not A high resolution CCD camera enables a visual distorted by the contact pressure. real time analysis of the sample expansion, eit- her as single frame or as video sequences. The big advantage of this method is that the DSC - Differential Scanning Calorimeter Option DSC - Differential Scanning Calorimeter Option for Optical Dilatometer 4 Several correction and analysis features are in- • determination of viscosity curves of glasses corporated into the LINSEIS Evaluation Software. • analysis of sintering warpage (sintering of The unique horizontal design enables most de- ceramic tapes and multilayers; co-sintering of manding applications. The special solid-liquid metal-ceramic bi- and multi-layers) adapter allows expansion / volume measure- • analysis of the infiltration behavior of metallic ments of solids, liquids and solid – liquid phase melts in ceramic materials (synthesis by melt- transitions. There is also a special sample holder infiltration) for measuring rigid foils available, which avoids • analysis of melt filtration by porous ceramic measurement errors due to pushrod forces like materials in a classical dilatometer. • investigation of the coating behaviour • analysis of the brazing behavior and brazing Application tests, solder developement, glas-metal or • analysis of sintering processes (densification ceramic sealing behavior as a function of temperature and time sintering kinetics) Industries • analysis of the thermal expansion behavior • glass (thermal expansion coefficient) • metal • investigation of the wetting- and spreading- • enamel coatings behaviour of metallic- and glass-melts, slags • ceramics and ashes on different substrates (metal, cera- • energy mic, glass) • optical determination of the drop shape and contact-angle determination of surface ten- sion up to high temperatures • analysis of the softening - and melting behavi- or (melting kinetic) • investigation of corrosion behavior (metallic- and glass-melts, slags etc. on refractory mate- rials) Dilatometer • analysis of the ash melting behavior 5 OPTICAL DILATOMETER Sintering The investigation of sintering processes using that the sintering process can take place wit- pushrod dilatometers has one disadvantage: hout any influence. If you compare the results There is always a force in z-direction that can of the same substance that was sintered on an cause a certain sinter direction. The optical di- optical and on a pushrod dilatometer, there can latometer instead is able to measure a sinter be big differences because of this effect. process completely contact free and guarantees Sintering behaviour of ceramic tapes (ZrO2) 1.00 0.95 0 0.90 L / 0.85 0.80 0 200 400 600 800 1000 1200 1400 1600 Temperature [°C] 1.00 0.95 0 0.90 -0.001 0 )/dt 0 L / 0.85 -0.002 d(L/L 0.80 -0.003 0.75 -0.004 -0.005 240 260 280 300 320 340 360 380 Time [min] 6 HEATING MICROSCOPE Applications • Ash fusion microscopy mass there is a pre norm DIN CEN/TS 15730 that can • Observation and analysis of sintering processes be used as well. It defines four characteristic tempe- • Contact angle determination ratures under oxidizing atmosphere. • Microscopy at high temperatures and under different atmospheres Functional Principle The principle of determination of the ash melting be- Ash melting microscope havior is based on a sample that is melted under de- Ash melting of a coal sample fined temperature ramps. The melting temperatures 1 2 for stone coal are up to 1600°C, for bio mass and wood they are at around 1200°C to 1300°C and for culm Ash melting Ash microscope containing bio mass they are even lower. The evalua- 3 4 tion is done automatically according to DIN 51730 by monitoring of a shadow profile of the sample where 1 – Softening temperature = edges are getting round the change of geometry is documented. By means of 2 – spheric temperature = round shape of height that is as big as its baseline operating geometric factors, the resulting characteri- 3 – half sphere temperature = half sphere shape of stic temperatures can be determined and be used for height that is half the size of its baseline 4 – flow temperature = sample is nearly liquid, has comparison of different coal qualities. only one third of the size of half sphere point General Fields of Application Solid ash fuels consist of inorganic compounds like si- • Measurements according to DIN 51730 (1984, licon oxide and alkali oxides. Due to the high diversi- 1998) / ISO 540-1995 ty of ash compositions it is nearly impossible neither • Characteristic temperatures plus start of sinte- to define a universal melting point nor to determine ring / sintering point a fuel specific melting point. The melting behavior of • Ash melting behavior ashes is heavily dependent on its chemical composi- • Sintering behavior tion. The melting procedure of ashes takes place in a • Dilatometric curves (e.g. shape, area) broader temperature range. Even if the slagging pro- • Softening- and melting behavior, moistening behavior blems of power plants are different from each other, • Viscosity curve the melting behavior of ashes is useful to get a qua- Suitable for analysis of coal ashes, bio ashes, litative analysis of the slagging behavior of different slags, as well as ceramic, enamel, clay ceramics, coals what gives a result that can be applied to the dental ceramics, grinding discs, special cera- corresponding boiler. The ash melting behavior of mics, fire proof ceramics, glass, steal, soldering coals is determined according to DIN 51730, for bio pastes, stainless steel and fluxing agents. 7 SOFTWARE Features -Software In respect to thermal and mechanical sample • Quenching Dilatometer Software treatment numerous different matematical • CHT / CCT / DCCT / TTT Diagrams functions can be selected. • Thermo Kinetics Software • User-friendly • Multi-methods analysis (DSC TG, TMA, DIL, etc.) Control and Evaluation • Zoom function Software • Online help menu • Software package compatible with Windows 7 • Report generator and 8 • Data export to MS Excel • Software for creation of CHT, CCT, DCCT and • Export and import of data ASCII TTT diagrams • Program capable of text editing • all necessary measuring parameter are inclu- • Data security in case of power failure ded in the menu structure • Thermocouple break protection • Unlimited number of forming steps during • Repetition measurements with minimum measurement parameter input • free choice of all control parameters • Evaluation of current measurement • Specification of temperature-time force-gradi- • Curve comparison up to 32 curves ent and strain rate and deformation degree • Storage and export of evaluations • Control rate input by user or selection of indus- • Programmable gas control try parameter, i.e. quenching rates based on • Statistical evaluation package T 8/5 times • Smoothing of total or partial measurement • Automatic force control on the basis of user • Tangent intersection determination (automa- defined functions tic or manual) • individual commentaries • Free scaling • heat up and cool down speeds The information of a thermo analytical measure- • end of the heating curve as well as duration of ment can be increased when using the broad holding temperature range of specialized Software. • programmable heating / cooling and isother- mal segments Software options • function menus are easy to handle • Specific Heat determination (Cp) • Graphical evaluation software with many func- • Rate
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